Small navigation update in server-hosted UI

[singeltary]

Hello,
When using the hosted version, after adding a participant, it can be difficult or confusing to return to the previous menu.
.

A small suggestion if editing: add a Cancel button to return, and change the text on the button to 'Save' (or similar).
I believe this would help clarify exactly what a user is doing here and how to proceed and make the setup process slightly more user-friendly.
Thank you