Context:
Micrososft Teams is used by organisations for video calls with both internal & external stakeholders. The screen depicted is shown to a user who is trying to join an internal call, via a browser.
Improve this screen so as to reduce cognitive load for the user, who most likely is not a regular Teams user. The goal should be to simplify the design, improve prioritisation of elements, while ensuring existing functionality is retained.
Note: Your output should be only one screen. You need to design a screen for desktop.