A device with a touch-sensitive display, a rotatable input mechanism, processors, and memory storing programs for displaying, on the touch-sensitive display, a user interface comprising a plurality of objects each associated with a contact and an affordance representing a first contact is disclosed. The memory may include programs for, in response to receiving the first input, updating the visual appearance of the affordance to represent the second contact among the plurality of contacts, and the memory also may include programs for, after updating the visual appearance of the affordance, updating display of the affordance to an add contact affordance, where the add contact affordance was not displayed prior to detecting the second input corresponding to the selection of the object that is not associated with any contact. Further, the memory may include programs for displaying a user interface for adding a contact upon selection of the add contact affordance.