If you have connected with other musicians as friends on JamKazam, it's easy to find sessions with your friends in them. To get started, click the orange Find Session tile on the home page of the app (pictured below with arrow).
The Find Session page is displayed, with the "For Me" option selected/active at the top of the page. This shows you any currently active sessions started by your JamKazam friend connections, as well as any sessions to which you've been invited. To join one of these sessions, simply click the Join icon (pictured below with arrow) to join the session.
When you click a join button or icon to join a session, you'll see a Terms and Conditions dialog box. Click the orange Accept button (pictured below with arrow).
You are dropped into the session (pictured below).