Do you know how to maintain this list?
Lokesh P replied
Go to Application & User Management work center
Select Business Users
Edit Access Rights
In the Work Center and view Assignment , Flag the relevant work center/view ID
In the Access Restrictions, for the relevant view, give unrestricted access
Lets say, if you are expecting User : A to be shown in this list, then make sure you add 'Managing My Area' work center view assigned to that person and this user should have unrestricted authorization to at least one of the work center views for which the corresponding BTM belongs to.
If you do this way, user will shown in the list for selection and then you will be able to assign the task &