You have to be near the mercenary guild or near a owned fief (castle or town)I may just be dumb but i'm a bit confused. I accidentally clicked accept when editing the gear for one of the custom troops and didnt equip them with what I wanted. But when I talk to the unit again in my party there is no option to edit their gear again. Am I missing something or do you have to do something else other than talk to them again to edit it after doing it once?