Go to edit favorites list>select favorites list. This should give you the systems to select, (next line down in the left column) select the system.
The right side of the page should show departments, sites, Unit ID's, select that then hit the + key and you should be able to add unit ID's in whatever format you selected, you can also switch this back and forth. This is how you add (or edit) a UID name and save as well.
I have over 1K of ID's saved on one system so far.
Edit fav>system>departments then sites same page as edit ID's, this is in HEX only and can also be changed in the scanner under manage favorites> edit system> edit sites> select site> set P25 NAC> set NAC in HEX.