We need a plugin to have users be able to login as other users, from a specific list.
User A needs to be able to login as User B, but not User C.
User D needs to be able to login as user C, E, F but not B.
Essentially we're trying to find a way for sales representatives to be able to place orders on behalf of their clientele. The primary reason we need it done this way, as opposed to entering a coupon code or something of that nature is due to integration with QB, and tracking of orders.
Hopefully this is legible enough for an answer.