In the terminal dnf localinstall /path/to/Webex.rpm (Red Hat, CentOS, Fedora) or apt install -f /path/to/Webex.deb (Debian, Ubuntu).
Run Webex, agree to the terms and conditions and log in with your university account (see Windows instructions).
MacOS
https://www.webex.com/de/downloads.html and click on „Download for macOS (Intel chip)“ (Intel processor) or „Download for macOS (Apple M1 chip)“ (ARM processor), depending on the processor.
Open the DMG file and copy the programme to the Applications folder by dragging the programme icon onto the folder
Now start the programme and agree to the conditions
Enter university e-mail address and click on „Next“
Log in with the access data of the university account