NFL rule changes

[sportscurmudgeon]

I need a "cap rules" tutorial please. Is Crazy Canuck in the house?

Scenario 1. Joe Flabeetz is on the practice squad. He gets paid $50K to show up and work out and practice. That does or does not count against the team salary cap?

Scenario 2. Joe Flabeetz has been on the practice squad earning his $50K. It may or may not count against the cap depending on the answer to #1 above. Due to a rash of injuries, Joe Flabeetz has to be activated to the actual team. His salary now goes up to the league minimum (let's say $250K for example). It is the eighth week of the year and he is on the squad for the rest of the season. Does he count as $125K against the cap (half of $250K)? Or does he count $250K? Or do they prorate what he made on the practice squad?

Scenario 3. Joe Flabeetz is on the practice squad earning his $50K. He gets activated for Week 6. So he now has a contract for $250K. He stinks out the joint in the game on week 6 and is sent back to the practice squad. Does he count as 1/16th of $250K for cap purposes?

Thanks in advance...