How to attach custom layout in BPM Task for Workflow Notification for Document of Records

Summary:

We have created a Document of Record to submit Time Anomalies. When user submits Time anomaly request, it goes to the line manager. User is submitting the time in DateTime format as we need to capture both date and time

This is a DFF field of PER_DOCUMENT_OF_RECORDS_DFF. The DFF field is storing value in UTC timezone and same is reflected in the notification being sent to manager. The end user is in AST TimeZone. I have modified the data-model of ManageDORReport, i.e.ManageDOR to convert the UTC timezone to AST timezone.

Now I am unable to attach the the custom Notification Template to the DocumentOfRecordApproval Task in BPM. I am unable to find the place where to attach the custom layout/dm. Please help in this.