Sign into Zoom Desktop Client

Windows

Click the Windows icon in the taskbar.
In your apps list, scroll until you get to the Zoom folder.
Click on the Zoom folder.
Double click on the Zoom icon to launch the application.

Mac

Find the Finder icon in your Dock.
Right-click on the icon, then click New Finder Window.
In the new window, click Applications.
Find and double-click the zoom.us application to start the app.

Note: If Launchpad is on your dock, you can click that to access your applications list, and open Zoom from there.