A character becomes "locked" when it gets a kill for a guild. For example, lets say I get a kill with Tatooine Royal Navy on my main, Denchet. The character Denchet is now locked to TRN. If I try and help another guild on Denchet, that kill won't count. The only way to become "unlocked" is if the guild you are locked to disbands. This rule will be loosened two weeks after the raid is cleared in order to allow characters to permanently switch to a different guild. People constantly switching back and forth to different guilds to act as ringers will never be allowed, though. This will obviously be somewhat subjective and the final call is up to me.