If you decide you want to complete an activity at a later date, you can pend the activity until a later date.
Simply click the Pend button at the bottom of the blue Action Box on the compliance activity page. A pop-up window will then display that will allow you to enter a new date. The Pend Date will become the new Due Date on this specific compliance activity.
Please note that you cannot pend an activity beyond the end of the plan year.