To use Zoom, you need to download a light desktop application. You will need the meeting application on whatever device you are using. So if you are using multiple desktops or mobile devices, there is an app for each. More on the meeting application at

When prompted, download the file. 

If saving from Canvas, you'll see a prompt in the browser to open from your Downloads area.

Launch the Meeting Download file and follow the instructions. 

When you launch the Meeting Client, you need to log into Zoom using your Google account.