A way to "lock" players to a certain battlegroup

Hello, i thought it would be cool if you could add a feature that allows officers to "lock" players into particular battlegroups so they don't accidentally enter the wrong bg. I think this is very useful, especially if a player has been with a certain bg for several months and was recently transferred. Most likely force of habit will make him enter his old bg. This will save alliances a lot of hassle.
2