diff --git a/app/Http/Controllers/PredefinedMutationController.php b/app/Http/Controllers/PredefinedMutationController.php
new file mode 100644
index 0000000..83b5929
--- /dev/null
+++ b/app/Http/Controllers/PredefinedMutationController.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Dynamic;
+use App\Models\PredefinedMutation;
+use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+
+class PredefinedMutationController extends Controller
+{
+    use AuthorizesRequests;
+
+    /**
+     * Display a listing of the resource.
+     */
+    public function index(Dynamic $dynamic)
+    {
+        $this->authorize('update', $dynamic);
+
+        return Inertia::render('Dynamics/PredefinedMutations/Index', [
+            'dynamic' => $dynamic,
+            'predefined_mutations' => $dynamic->predefinedMutations()->latest()->get(),
+        ]);
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     */
+    public function store(Request $request, Dynamic $dynamic)
+    {
+        $this->authorize('update', $dynamic);
+
+        $request->validate([
+            'name' => ['required', 'string', 'max:255'],
+            'description' => ['nullable', 'string'],
+            'amount' => ['required', 'integer'],
+            'type' => ['required', 'string', 'in:reward,penalty'],
+        ]);
+
+        $dynamic->predefinedMutations()->create($request->all());
+
+        return redirect()->route('dynamics.predefined-mutations.index', $dynamic);
+    }
+}
diff --git a/app/Models/Mutation.php b/app/Models/Mutation.php
index f4c1d91..67431c9 100644
--- a/app/Models/Mutation.php
+++ b/app/Models/Mutation.php
@@ -20,6 +20,7 @@ class Mutation extends Model
         'amount',
         'description',
         'status',
+        'predefined_mutation_id',
     ];
 
     public function ledger(): BelongsTo
@@ -32,6 +33,11 @@ class Mutation extends Model
         return $this->belongsTo(User::class);
     }
 
+    public function predefinedMutation(): BelongsTo
+    {
+        return $this->belongsTo(PredefinedMutation::class);
+    }
+
     public function chat(): MorphOne
     {
         return $this->morphOne(Chat::class, 'chatable');
diff --git a/app/Models/PredefinedMutation.php b/app/Models/PredefinedMutation.php
new file mode 100644
index 0000000..cdd1a0f
--- /dev/null
+++ b/app/Models/PredefinedMutation.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class PredefinedMutation extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'dynamic_id',
+        'name',
+        'description',
+        'amount',
+        'type',
+    ];
+
+    public function dynamic(): BelongsTo
+    {
+        return $this->belongsTo(Dynamic::class);
+    }
+}
diff --git a/app/Services/ActivityService.php b/app/Services/ActivityService.php
index 42d7282..7b099a3 100644
--- a/app/Services/ActivityService.php
+++ b/app/Services/ActivityService.php
@@ -45,6 +45,31 @@ class ActivityService
         return $cursor ? $cursor->read_at : Carbon::parse('1970-01-01');
     }
 
+    public function createMessage($chat, $user, $content, $subject = null)
+    {
+        $message = $chat->messages()->create([
+            'user_id' => $user ? $user->id : null,
+            'content' => $content,
+            'subject_id' => $subject ? $subject->id : null,
+            'subject_type' => $subject ? get_class($subject) : null,
+        ]);
+
+        return $message;
+    }
+
+    public function createMutation($ledger, $user, $type, $amount, $description, $status)
+    {
+        $mutation = $ledger->mutations()->create([
+            'user_id' => $user->id,
+            'type' => $type,
+            'amount' => $amount,
+            'description' => $description,
+            'status' => $status,
+        ]);
+
+        return $mutation;
+    }
+
     /**
      * Retrieve all activities for a given entity.
      */
diff --git a/database/migrations/2026_06_16_225928_create_predefined_mutations_table.php b/database/migrations/2026_06_16_225928_create_predefined_mutations_table.php
new file mode 100644
index 0000000..1f157e0
--- /dev/null
+++ b/database/migrations/2026_06_16_225928_create_predefined_mutations_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('predefined_mutations', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('dynamic_id')->constrained()->cascadeOnDelete();
+            $table->string('name');
+            $table->text('description')->nullable();
+            $table->integer('amount');
+            $table->string('type')->default('reward');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('predefined_mutations');
+    }
+};
diff --git a/database/migrations/2026_06_16_225946_add_predefined_mutation_id_to_mutations_table.php b/database/migrations/2026_06_16_225946_add_predefined_mutation_id_to_mutations_table.php
new file mode 100644
index 0000000..ccc3740
--- /dev/null
+++ b/database/migrations/2026_06_16_225946_add_predefined_mutation_id_to_mutations_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('mutations', function (Blueprint $table) {
+            $table->foreignId('predefined_mutation_id')->nullable()->constrained()->onDelete('set null');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('mutations', function (Blueprint $table) {
+            $table->dropForeign(['predefined_mutation_id']);
+            $table->dropColumn('predefined_mutation_id');
+        });
+    }
+};
diff --git a/resources/js/pages/Dynamics/PredefinedMutations/Index.vue b/resources/js/pages/Dynamics/PredefinedMutations/Index.vue
new file mode 100644
index 0000000..ae83851
--- /dev/null
+++ b/resources/js/pages/Dynamics/PredefinedMutations/Index.vue
@@ -0,0 +1,247 @@
+<script setup lang="ts">
+import { Head, useForm } from '@inertiajs/vue3';
+import { route } from 'ziggy-js';
+import AppLayout from '@/layouts/AppLayout.vue';
+import { defineProps } from 'vue';
+
+const props = defineProps<{
+    dynamic: {
+        id: number;
+        name: string;
+    };
+    predefined_mutations: Array<{
+        id: number;
+        name: string;
+        description: string;
+        amount: number;
+        type: string;
+    }>;
+}>();
+
+const form = useForm({
+    name: '',
+    description: '',
+    amount: 0,
+    type: 'reward',
+});
+
+const breadcrumbs = [
+    {
+        name: 'Dynamics',
+        href: route('dynamics.index'),
+    },
+    {
+        name: props.dynamic.name,
+        href: route('dynamics.show', props.dynamic.id),
+    },
+    {
+        name: 'Predefined Mutations',
+        href: route('dynamics.predefined-mutations.index', props.dynamic.id),
+    },
+];
+
+function submit() {
+    form.post(route('dynamics.predefined-mutations.store', props.dynamic.id), {
+        onSuccess: () => form.reset(),
+    });
+}
+</script>
+
+<template>
+    <Head title="Predefined Mutations" />
+
+    <AppLayout :breadcrumbs="breadcrumbs">
+        <div class="c-predefined-mutations">
+            <div class="c-predefined-mutations__container">
+                <div class="c-predefined-mutations__card">
+                    <div class="c-predefined-mutations__body">
+                        <h3 class="c-predefined-mutations__title">
+                            Predefined Mutations for {{ dynamic.name }}
+                        </h3>
+
+                        <div class="c-predefined-mutations__list">
+                            <div
+                                v-for="mutation in predefined_mutations"
+                                :key="mutation.id"
+                                class="c-predefined-mutations__item"
+                            >
+                                <div class="c-predefined-mutations__item-details">
+                                    <h4 class="c-predefined-mutations__item-name">
+                                        {{ mutation.name }}
+                                    </h4>
+                                    <p class="c-predefined-mutations__item-description">
+                                        {{ mutation.description }}
+                                    </p>
+                                </div>
+                                <div class="c-predefined-mutations__item-amount">
+                                    {{ mutation.amount }}
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                <div class="c-predefined-mutations__card mt-8">
+                    <div class="c-predefined-mutations__body">
+                        <h3 class="c-predefined-mutations__title">
+                            Create New Predefined Mutation
+                        </h3>
+
+                        <form
+                            @submit.prevent="submit"
+                            class="c-predefined-mutations__form"
+                        >
+                            <div class="c-predefined-mutations__field">
+                                <label
+                                    for="name"
+                                    class="c-predefined-mutations__label"
+                                    >Name</label
+                                >
+                                <input
+                                    v-model="form.name"
+                                    id="name"
+                                    type="text"
+                                    class="c-predefined-mutations__input"
+                                />
+                            </div>
+
+                            <div class="c-predefined-mutations__field">
+                                <label
+                                    for="description"
+                                    class="c-predefined-mutations__label"
+                                    >Description</label
+                                >
+                                <textarea
+                                    v-model="form.description"
+                                    id="description"
+                                    rows="4"
+                                    class="c-predefined-mutations__textarea"
+                                ></textarea>
+                            </div>
+
+                            <div class="c-predefined-mutations__field">
+                                <label
+                                    for="amount"
+                                    class="c-predefined-mutations__label"
+                                    >Amount</label
+                                >
+                                <input
+                                    v-model="form.amount"
+                                    id="amount"
+                                    type="number"
+                                    class="c-predefined-mutations__input"
+                                />
+                            </div>
+
+                            <div class="c-predefined-mutations__field">
+                                <label
+                                    for="type"
+                                    class="c-predefined-mutations__label"
+                                    >Type</label
+                                >
+                                <select
+                                    v-model="form.type"
+                                    id="type"
+                                    class="c-predefined-mutations__select"
+                                >
+                                    <option value="reward">Reward</option>
+                                    <option value="penalty">Penalty</option>
+                                </select>
+                            </div>
+
+                            <div class="c-predefined-mutations__actions">
+                                <button
+                                    type="submit"
+                                    :disabled="form.processing"
+                                    class="c-predefined-mutations__submit-btn"
+                                >
+                                    Create
+                                </button>
+                            </div>
+                        </form>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </AppLayout>
+</template>
+
+<style scoped>
+@reference "../../../../css/app.css";
+
+.c-predefined-mutations {
+    @apply py-12;
+}
+
+.c-predefined-mutations__container {
+    @apply mx-auto max-w-7xl sm:px-6 lg:px-8;
+}
+
+.c-predefined-mutations__card {
+    @apply overflow-hidden bg-white shadow-sm sm:rounded-lg dark:bg-gray-800;
+}
+
+.c-predefined-mutations__body {
+    @apply p-6 text-gray-900 dark:text-gray-100;
+}
+
+.c-predefined-mutations__title {
+    @apply text-lg font-medium;
+}
+
+.c-predefined-mutations__list {
+    @apply mt-6 space-y-4;
+}
+
+.c-predefined-mutations__item {
+    @apply flex items-center justify-between rounded-lg border p-4 dark:border-gray-700;
+}
+
+.c-predefined-mutations__item-details {
+    @apply flex-1;
+}
+
+.c-predefined-mutations__item-name {
+    @apply font-semibold;
+}
+
+.c-predefined-mutations__item-description {
+    @apply text-sm text-gray-600 dark:text-gray-400;
+}
+
+.c-predefined-mutations__item-amount {
+    @apply text-lg font-semibold;
+}
+
+.c-predefined-mutations__form {
+    @apply mt-6 space-y-6;
+}
+
+.c-predefined-mutations__field {
+    @apply block;
+}
+
+.c-predefined-mutations__label {
+    @apply block text-sm font-medium text-gray-700 dark:text-gray-300;
+}
+
+.c-predefined-mutations__input {
+    @apply mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+}
+
+.c-predefined-mutations__textarea {
+    @apply mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+}
+
+.c-predefined-mutations__select {
+    @apply mt-1 block w-full rounded-md border-gray-300 bg-white p-2 text-sm shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+}
+
+.c-predefined-mutations__actions {
+    @apply flex items-center gap-4;
+}
+
+.c-predefined-mutations__submit-btn {
+    @apply inline-flex items-center rounded-md border border-transparent bg-gray-800 px-4 py-2 text-xs font-semibold tracking-widest text-white uppercase transition duration-150 ease-in-out hover:bg-gray-700 focus:bg-gray-700 focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2 focus:outline-none active:bg-gray-900 dark:bg-gray-200 dark:text-gray-800 dark:hover:bg-white dark:focus:bg-white dark:focus:ring-offset-gray-800 dark:active:bg-gray-300;
+}
+</style>
diff --git a/resources/js/pages/Dynamics/Settings.vue b/resources/js/pages/Dynamics/Settings.vue
index c461ce6..5aaeb8b 100644
--- a/resources/js/pages/Dynamics/Settings.vue
+++ b/resources/js/pages/Dynamics/Settings.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { Head, useForm } from '@inertiajs/vue3';
+import { Head, useForm, Link as InertiaLink } from '@inertiajs/vue3';
 import { route } from 'ziggy-js';
 import AppLayout from '@/layouts/AppLayout.vue';
 
@@ -70,6 +70,12 @@ function submit() {
                     </form>
                 </div>
             </div>
+
+            <div class="mt-8">
+                <InertiaLink :href="route('dynamics.predefined-mutations.index', dynamic.id)" class="c-dynamic-settings__submit-btn">
+                    Manage Predefined Mutations
+                </InertiaLink>
+            </div>
         </div>
     </div>
 </template>
diff --git a/routes/web.php b/routes/web.php
index 3f472d0..59f7bed 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -19,6 +19,8 @@ Route::middleware(['auth', 'verified'])->group(function () {
     Route::get('/dynamics/{dynamic}/ledgers/create', [LedgerController::class, 'create'])->name('dynamics.ledgers.create');
     Route::resource('dynamics.ledgers', LedgerController::class)->scoped()->except(['create']);
 
+    Route::resource('dynamics.predefined-mutations', \App\Http\Controllers\PredefinedMutationController::class)->scoped();
+
     Route::resource('dynamics.ledgers.mutations', MutationController::class)->scoped();
 
     Route::get('/dynamics/{dynamic}/invitations/create', [\App\Http\Controllers\DynamicInvitationController::class, 'create'])->name('dynamics.invitations.create');