Hi,
you can create custom field like radio called "Show your profile on the list" with 2 options

1|YES

2|NO

and in the Users list set "SQL Custom SQL WHERE" parameter with something like:

show_your_profile_on_the_list <> "2"

The users list will show only users that have "Show your profile on the list" value set to YES or empty


Docs:
Users List: http://docs.easy-profile.com/index.php/article/users-listsearch
Custom SQL Where: http://docs.easy-profile.com/article/sql-custom-where