The idea is to remove employees (or any users) from the leader boards so that they don't "clog up" the leader board list.

 

Users can be hidden from the leader board by designating the user as "Anonymous".  The Nitro user is still linked to Jive and still accumulates points, but does not display in the leader board.  The "Anonymous" flag can be set in the Nitro Admin Console, but searching for the user, selecting the Prefs tab and clicking the Add button at the bottom of the screen:

 

 

Ref:  Is there a way to exclude specific users from showing up on the leaderboard?