Workspace Reservations: Allowing a user to reserve rooms for another user

Hello!

I am almost certain this functionality exists but I can't find exactly how to do it, so maybe I'm wrong.

The use case i'm trying solve is that User A is able to reserve workspaces for User B.  User B is a sales advisor and their account manager(User A) creates all their meetings etc.  

As i said previously, during our demo period, i thought this was laid out as a possibility, but now trying to configure I can't figure out how and struck out on finding the instructions on my won.