To remove an Insightly calendar from Google Calendar:
- Open Google Calendar.
- Click the gear icon in the upper right.
- Click the Calendars link in the upper left. This will display your list of calendars.
- Click the Unsubscribe link to the right of each calendar you want to remove.
If you are using Insightly's calendar sync feature, you will need to turn off the sync from the User Settings > Google Sync page. See our calendar sync article for a screenshot of this setting.