PBEM phased fire and Supply Sources/Wagons

[2-81 Armor]

I'm wondering if anyone can help me with the follow questions?

PBEM Phased fire: A year ago I was in a PBEM battle (Murfreesboro) where my opponent coached me on how to set up the game so that we could have phased defensive fire in it, but would still be able to exchange emails by Turn rather than by Phases. All I can recall is it had something to do with what combination of options were selected at game start (sort of manipulating the system). It did work, and we were able to fight the entire battle this way with no problems, exchanging entire Turns, not Phases by email. I've since lost touch with this person, and (stupid me!) I've lost the written notes I made for how to do this. Has anyone else played this way, and can you help with how to accomplish setting it up?

Supply Sources: In a game, if one side has a supply source on map, and the opposing forces enter that hex, is the source removed from the game? (Like capturing a major depot?). Further, if a source hex is entered, are all units of the losing side now considered to be isolated or out of supply? In scenario design if one or both sides are given a supply source, are supply wagons still needed? I've looked at all of the game documentation, and I can't find anything covering these situations beyond the isolation rules. Maybe I'm overlooking something simple?

Supply Wagons: Most scenarios in this series have supply wagon assigned to divisions. If a division were to lose it's wagon, could it still draw supply from the wagon of another division? In scenario design if an OOB was created that assigned wagons at the brigade level, would these wagons be limited to supplying their brigade only? Further, if the parent division of those brigades also had a wagon, would it be capable of supplying any brigade in that division? Last one about wagons: Many if not all OOB's at their end show an "Army Wagon" or "Army Train", but I've never encountered these being used. Does anyone know if they have a function and what it might be?

I hope someone can provide some insight, and like I said, I may be overlooking the obvious.