Board Thread:Questions and Answers/@comment-49.144.178.109-20151119010425/@comment-856627-20170111221451

This is an old thread, but since it was revived anyway, as Kako explained (forgot which chapter, but it was when she tried recruiting Yuma), A-Rank agents are allowed to modify their triggers, but this refers to Border's regular triggers. As Chippo said, T-1's custom triggers are experimental triggers made specifically for their users, while HQ's triggers are made so that any Border agent can use them.