On Android, tap the menu icon at the top right of the browser and then tap on "Add to Home screen".

On iPhone, tap the share icon and select "Add to Home Screen" from the list.

This can be achieved in a few ways:

• Family and friends can create free accounts with whom you can share private calendars.
• By creating a public calendar, anybody with the link can view the calendar. This feature is coming soon.

The most likely cause is that you've turned off the calendar.

On mobile devices, tap the "customize view" button below the main calendar view. All your calendars are shown on the next pop-up and you can turn them on or off by tapping on the switch to the left of the calendar name.

On desktop browsers, the list of calendars appear to the left of the main calendar view. Tap the switch to the left of the calendar name to turn it on or off.

Each member of a calendar can be assigned permissions that:

• Limit their ability to create, update, or delete events
• Limit their ability to drag and drop events on the calendar
• Requires an explicit confirmation when moving an event