The Agent Schedule app in Zendesk gives agents a complete view of their schedules without logging out of your Zendesk account. From the app, agents can check what their current task is, see what's coming up, and request time off.
The Agent Schedule app can't be deactivated or hidden. However, if you opt out of using the schedule, the app in Zendesk won't display any data.
Note that when agents access their schedule in Zendesk, they are switched to Untracked time.