Online classes are held over **Zoom**. You need to be enrolled first.

## When the Join button appears

The **Join** button becomes available **10 minutes before the class starts** and
stays available while the class is live. Before that, the class page shows
"You're enrolled! The join button will appear 10 minutes before the class
starts."

You'll also get a notification when the class goes live.

## Joining

1. Open the class from the **Classes** tab, the **Upcoming classes** widget, or
   the card at the top of Home.
2. Tap **Join** (or **Join the Waiting Room** if the instructor hasn't opened the
   meeting yet).
3. Zoom opens. If you don't have the Zoom app installed, your phone will prompt
   you — installing it gives the smoothest experience.

## Camera and microphone

The first time you join, your phone asks permission to use the **camera** and
**microphone** so you can be seen and heard. You can join with both off and turn
them on later.

## Problems joining

If nothing happens or you see "No meeting link", the instructor may not have set
the link up yet — wait a minute and try again. See
[Can't join a class](../troubleshooting/cant-join-a-class.md).