We have 2 users.

One user has "rsecor@seqlogic.com" as it's primary and "rsecor@int.seqlogic.com" as a secondary email as we are hosting our primary email ourselves.

The second user was just added and is"gvazquez@seqlogic.com" however we cannot change its primarily email from "gvazquez@int.seqlogic.com"

How do we do this?