Uber uses Zoom to conduct video calls. Once your video call is scheduled, you'll be given a Meeting ID number. Once you have the Meeting ID number, at your scheduled time, use this link to join the Zoom call:
https://zoom.us/joinIt's not required, but you can download the program for Zoom before your scheduled call using the link below. If you do not download beforehand, don't worry. When joining or starting a meeting for the first time, your web browser will help you install the program.
Zoom Download Center:
https://zoom.us/download#client_4meeting