The self-assignment/assignment request feature makes an assignment open for any official to claim/request. Here is how it works:

1. An assignor marks a game as open for self-assignment
2. The game appears on a list of games with open positions
3. An official "claims"/"requests" the game

In the claim mode, the official is placed in the slot when making the claim.

In the request mode, the official's request is emailed to the assignor so the assignor can make the final decision.

If the official later cannot do the game, the assignor reassigns the position to another official or removes the official from the slot. Upon removing the official from the slot, the position will reappear on the open games list.