Should you no longer want to use the Service Account, should you want to test something, or you just want to set up a different account to be used as your Service Account, you can disconnect the Service Account.

Disconnecting the Service Account results in deactivation of central management of your calendars. However, all calendar connections are retained. A re-connection can be done at any time.

Proceed as follows:

1. Open the page Basic Settings.
2. Click the Calendar tab.
3. Click the  Disconnect Service Account button.
4. Click the  Disconnect button to confirm your choice. Otherwise, click the Keep connection button to keep the user connected to your Service Account.