Shooting Technical

[benbret]

NFHS Rules. 3 part question. During second quarter team A player 1 receives a T for baiting an opponent. B6 comes into the game to shoot the free throws and B1 goes out of the game. B6 misses the first free throw and B7 comes in for B6 to shoot the second free throw. Can B1 then return and replace B7 without the ball becoming alive or does B1 have to set out at least 1 tick of the clock?

#2 Can B6 and B7 shoot the free throws without a member of team B being replaced? (Have 6 players on the floor)

#3 During warm ups, A1 is charged a T for dunking. A member of Team B can shoot the free throws, but does one of the starting 5 for team B have to sit out the throw in at half court by team B? Can you provide the rule?