Assignors should be selected by the affiliated competitions being served with advisement from the State Referee Committee.

Assignor appointments should be made for a period of at least one year and assignors should be familiar with the registration and certification processes for officials.

All USSF sanctioned games must be assigned by a certified assignor.  This includes recreational, competitive youth, adult amateur, and professional games.  A sanctioned game is defined as a game that includes a USSF member team or club playing another member team or club.

When an assignor is also a referee, they should not officiate in any competition where they also serve as an assignor (unless in an emergency situation).