How do I access archived controls?

Open "Activities" from the Dashboard or from a control program's overview.
Click "Filters" to open the filter panel, if it isn't already open.
Under the filter-fields, tick off "Archived control activities". Untick "Active control activities" if you want to only see the archived controls.
Archived activities now appear in the list, marked with an archive icon next to the control name. When you hover over the icon, you can see when the activity was archived.

Learn more:

Do you need to perfrom a control? Go to How do I perform my control?
Do you need to view previous control results? Go to How can I access my previous control results?
Do you need to unarchive one or more controls? Go to How to unarchive a control

Archived control activities can be hidden from your active activity list, reports and dashboard so they don't clutter your day-to-day view - but they're never deleted. If an activity by accident was archived, you can also bring an archived activity back yourself, either one at a time or in bulk.