diff --git a/enrollments-events/app/events/emails/reminder_no_access_3_days.py b/enrollments-events/app/events/emails/reminder_no_access_3_days.py
index 0628e22..cd041de 100644
--- a/enrollments-events/app/events/emails/reminder_no_access_3_days.py
+++ b/enrollments-events/app/events/emails/reminder_no_access_3_days.py
@@ -5,7 +5,7 @@ from aws_lambda_powertools.utilities.data_classes import (
 )
 from aws_lambda_powertools.utilities.typing import LambdaContext
 from layercake.dateutils import now
-from layercake.dynamodb import ComposeKey, DynamoDBPersistenceLayer, KeyPair
+from layercake.dynamodb import DynamoDBPersistenceLayer, KeyPair
 from layercake.strutils import first_word, truncate_str
 
 from boto3clients import dynamodb_client, sesv2_client
@@ -39,6 +39,7 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
 
     # Post-migration: Remove the following lines
     if 'email' not in old_image:
+        # If email is missing, use enrollment email
         data = enrollment_layer.get_item(KeyPair(old_image['id'], '0'))
         old_image['name'] = data['user']['name']
         old_image['email'] = data['user']['email']
@@ -72,9 +73,9 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
         enrollment_layer.put_item(
             item={
                 'id': old_image['id'],
-                'sk': ComposeKey('failed', 'schedules#reminder_no_access_3_days'),
+                'sk': 'schedules#reminder_no_access_3_days#failed',
                 # Post-migration: Uncomment the following line
-                # 'sk': ComposeKey('failed', old_image['sk']),
+                # 'sk': f'{old_image["sk"]}#failed',
                 'created_at': now_,
             }
         )
@@ -84,9 +85,9 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
         enrollment_layer.put_item(
             item={
                 'id': old_image['id'],
-                'sk': ComposeKey('completed', 'schedules#reminder_no_access_3_days'),
+                'sk': 'schedules#reminder_no_access_3_days#executed',
                 # Post-migration: Uncomment the following line
-                # 'sk': ComposeKey('completed', old_image['sk']),
+                # 'sk': f'{old_image["sk"]}#executed',
                 'created_at': now_,
             }
         )
diff --git a/enrollments-events/template.yaml b/enrollments-events/template.yaml
index d246c56..05dc0f3 100644
--- a/enrollments-events/template.yaml
+++ b/enrollments-events/template.yaml
@@ -62,6 +62,30 @@ Resources:
                 new_image:
                   sk: ["0"]
 
+  EventAllocateSlotsFunction:
+    Type: AWS::Serverless::Function
+    Properties:
+      Handler: events.allocate_slots.lambda_handler
+      LoggingConfig:
+        LogGroup: !Ref EventLog
+      Policies:
+        - DynamoDBCrudPolicy:
+            TableName: !Ref OrderTable
+        - DynamoDBCrudPolicy:
+            TableName: !Ref EnrollmentTable
+      Events:
+        DynamoDBEvent:
+          Type: EventBridgeRule
+          Properties:
+            Pattern:
+              resources: [!Ref OrderTable]
+              detail-type: [INSERT]
+              detail:
+                new_image:
+                  sk: [slots]
+                  mode: [BATCH]
+                  status: [PENDING]
+
   EventReminderNoAccess3DaysFunction:
     Type: AWS::Serverless::Function
     Properties: