We recommend that you download Zoom Client for Meetings ahead of time -
https://zoom.us/download.
The web browser client will download automatically when you start or join your first Zoom meeting, but we recommend that you manually download it prior to the conference using the link above. Although you do not need to download the Zoom application to participate—you can run the meeting in your browser by clicking “join from your browser” at the bottom of the page—the viewing experience is better through the app.