Team Member License Usage

I'm looking for some documentation that explains how the current license structure works for Team Member and 8.3.2. I had read that the licensing would be a 1-to-1 relationship, such that, if User A has a P6 Web license, User A would need a second license in order to log into Team Member. Prior to 8.3.2, I believe User A could have had a single license which would have allowed them access into both P6 Web and Team Member.

Is there any documentation available to shed some light on this?

Thank you,

Scot