An electronic device is disclosed. The device can display a live video communication user interface of a live video communication application that includes participant affordances corresponding to participants. In response to detecting an input that corresponds to a request to initiate a process of starting a new live communication session, the device can: in accordance with the input corresponding to selection of the first participant affordance, initiate a process of starting a new live communication session that includes a group of three or more participants; and in accordance with the input corresponding to selection of the new session affordance, initiate a process for selecting two or more participants and start a new live communication session that includes a participant associated with the device and the selected participants.