Welcome to Brainshark for Coaching!
When you first open the Coaching tab you will be on your All Activities section. This will show you all the Coaching Activities you are able to access as a participant or a reviewer. The My Activities section will show you all the activities you are a participant of, while the Activity Reviews section will show you Activities you are listed as a reviewer on.
If you are a Head Coach or the owner of an Activity you can click on the "..." if you wish to edit the Activity to add more participants or reviewers.
A participant can upload as many Activity responses they wish (provided it is a not a Machine Analysis enabled Activity). Each attempt will show as a new "Version" when the review goes in to provide feedback. The most recent version will show first.
For steps on how to create a new coaching challenge, see this article.