Yahoo has only two options either daily lineups or weekly (on Monday) lineups. There are no options for acquiring players. Either players are free agents or on waivers. If you have weekly lineups, you can still pick up a player anytime the week before and drop a player, but they won't show up until your line up for the next week. There is no way other than to manually set waivers, to do a weekly lineup with waiver acquisitions. I guess the FAAB is kind of useless, as has been discussed. I don't think it really matters, so I'm leaning toward keeping it and see what (if anything) it does.
Also, I realize this poll is rather late as the draft is Tuesday.