Navigate to the Task Event or Habit Instance by:
Clicking on the associated Task Event or Habit Instance in the Calendar.
Clicking on the name of the Task or Habit in the add-on side panel.
Find the scheduled Task Event or Habit Instance.
Click the calendar icon labeled Reschedule.
A pop-up will appear with options of how long to push the Task Event to the future.
Reschedule for a Task
Reschedule for a Habit
Refer to Remove scheduling exceptions from the Google Calendar add-on to clear any scheduling exceptions.