How to add a newly configured task to the already allocated checklists for employees?

Summary:

How to add a newly configured task to the already allocated checklists for employees

Content (please ensure you mask any confidential information):

We have an urgent requirement to create a new task for a checklist at a template level, we are able to do this. But, we are facing an issue in assigning that newly created/configured checklist task to the employees existing checklist.

Can someone please assist if this can be done via HDL and appreciate if you can share any sample HDL to test this from our end?

Also, we could see that this can't be achieved via the process as per Oracle's documentation. Please confirm, if our understanding is incorrect.