WebEx: How to Join A Webex Event as an Attendee via Web Browser
The main steps are listed below. However, you can go to the WebEx instructions page for additional details.
Open your email or calendar invitation.
If registration is required, click Register, submit your name and email address, and open the confirmation email when your registration is approved.
Click Join webinar and the Meetings desktop app downloads automatically for you to install.
Click Open Webex if you're prompted to do so; otherwise, click Launch webinar.
Enter your name as you want it to appear in the webinar, check Remember me, and then click Sign in so you can access the full list of webinar features.
If prompted, enter the attendee password—it's in the email invitation—and then click Continue.
Connect your video and audio and then click Join webinar.