On a research list, you can assign a prospect manager to one or selected members.
Assign to One Member
From a research list, under Members, click the double arrows for a list member 
. An action bar appears for the constituent. Click Assign prospect manager. The Assign a prospect manager screen appears. Search for and select a manager. Click Save.
Assign to Selected Members
If you need to assign the same manager to several members, in the Members list, select the checkboxes for the members you want to include in the assignment.
At the top of the Members list, click Assign prospect manager (number selected). The Assign a prospect manager screen appears. Search for and delect a manager. Click Save.