We use a free video conference tool called Zoom and in sessions students will use the Screen Share function to present their work. Your work doesn't need to be in any particular format, in fact we encourage students to show their work in progress!
Your work also does not need to be completed in order to present. A lot of students use these critiques as a way to brainstorm, ask questions, get ideas, etc. from their fellow UX Academy peers and this is absolutely the type of collaborative thought and action we love to see.
The facilitator who runs the session will be responsible for making sure that everyone has an opportunity to contribute to the discussion, and can also provide some guidance around the Zoom tool itself.
If you haven't used Zoom in the past, you'll be prompted to download the client when you join your first critique by clicking on the meeting link in #group_crits Slack channel when it's posted.
If you'd like to be prepared, feel free to download the Zoom meeting client here. It's free to join - you are not required to pay for any of Zoom's paid plans.