Usually the one-lane courtesy rule is announced in the coaches meeting...or it's just a given. Don't have my copy of the handbook here.
I prefer the PBA courtesy rule myself, however from watching college bowling for 9 years (and watching college players at other tournaments) I don't think a lot of players understand it. (Then again, I would also love a shot-clock rule such as the PBA has...that would help end worthless meetings and 7-8 hour squads.) Interesting that the one lane rule doesn't seem to affect the women very much...I guess their concentration is better? LOL