auto-fill uname information in your name when joining a web meeting

Welcome to the Zoom Community, @khitamtherapy.

This capability does not currently exist, but sounds like it would make a great Feature Request.

Submit Feature Request here: https://www.zoom.us/feed

Do you have a Zoom account?  You can get a Basic account for free, then set the "Display Name" in the Zoom Web Portal's Profile section, and Zoom will use this by default when you join a meeting, provided you are signed in to your Zoom account.