Questions Access Rights to Create New Users and Assign Roles

I want to give a specific user on my tech team the ability to create new Acumatica users and apply relative security roles.  I don't want to give this tech person any other sys admin rights, I just want them to create new users, tweak the user settings, assign them to access roles, and save the new user.

I've given them edit & granted rights to everything under the USER SECURITY for this new role they are in.  They now have access to the USERS screen (SM201010), but they are lacking the + in the tool bar to insert a new record.

Any advice?  Is it a hidden screen I need to tweak security on to allow the ability to insert a new record?  If so, I'm at a loss to figure out which one that might be.

-Ron