Back before Arbiter, we used to get our entire season of high school assignments by "snail" mail.
Since we started using Arbiter, we get our high school game assignments about two weeks in advance. We can see the time of "pending" games about a month in advance, but don't know where the game is, or who our partner will be. This allows our high school assigner to figure out which games will need a top notch crew, and make some adjustments throughout the season.
My Catholic middle school assigner also uses Arbiter, and he can "see" my high school game assignments on my high school Arbiter site. He then schedules my Catholic middle school games around my high school assignments, but doesn't post "pending" games, just assigned games.