Licensed Users Display Names

My nonprofit has purchased 6 licenses. Each license has been assigned to a facilitator. When each facilitator signs in to host a meeting, their display name is mine, not theirs. I know they can change the display name and they do, but why does zoom not display their name?

I will note that the email for the overall account is mine, not theirs. So when they sign in they use that email. I don’t know how to enable them to sign in using their own emails which are attached to their licenses.

Thanks for any help you can give me.