Custom results in Selection-List (with query)

Hello,

I need when I click "Search More" in the "Assigned To" field, open the Selection-List view, but with specific users (results of a query).

I don't want filters in selection-list, I want show only the users as a result of custom query.

Thanks in advance.

Best Regards,

Rubén Recacha.
Consultant REDK Software Engineering