Using the "button" or link quick keys (B in JAWS or VO + Command + L in VoiceOver) look for the button labeled "Open Collaborate Panel".

If the link quick key in VoiceOver doesn't identify this action, try VO + Command + G to go to the next graphic, or VO + Right Arrow to read the next item until you find it. 

Activating this button opens a 'tab list' which works as follows:

  1. The first tab "Chat" is focused by default. Use the TAB key on your keyboard to interact with the elements within the chat panel including reading and posting messages.
  2. Use the right and left arrow keys to move through the tabs (Chat, Attendees, Content, and Settings).
  3. Once a tab has focus you can use the TAB key to move through the elements on the page. Or back to the list of tabs.
  4. Tab to the "close Collaborate Panel" button to exit out of this experience.