The Active Stays screen displays any active parking stays you have, the location parked and the time remaining.
You can extend your stay (if the location allows) without returning to your vehicle by selecting the active stay and tap the 'Extend Stay' button. If your stay hasn't started yet (where you have pre-booked your parking ahead of arrival) you can also cancel the pending stay and will not be charged for it.
You can create a new stay by tapping the '+' button as per the Pay for Parking using the iOS App.
You can also access the following via the tab bar at the bottom of the screen: