Assigning Multiple Users to a Single Task in Child Table

I’m building a custom child table Doctype called “Action Item Management” inside a parent DocType. Each row represents a task with fields like user, fullname, status, deadline, comments.

Now, I want to allow assigning multiple users to the same task like one task handled by 2–3 people. But since Link fields don’t support multi-select in child tables.

So now is there any other option to do this task ?

How to fill this assign to information from some other field ..? - #2 by Vipul_Kumar refer this api , add multiselect child table and trigger function