Arbiter ?

[The Roamin' Umpire]

The Arbiter is very configurable, based on the preferences of the assignor of the association.

For my lacrosse association, it allows blocks based on date/time, distance, school, partner, you name it, because that's the way my lacrosse assignor runs things.

For football, we can block dates/times and that's it - all other "preference" requests need to be e-mailed to the assignors, because that's how they want to run things.