A method for using a local media playback system comprising a plurality of playback zones (610, 620; 906) having a plurality of playback functions, the method comprising: in response to an instruction from a first mobile device (300; 500; 630-633) of a first user to cause the local media playback system to enter a restricted mode, causing the local media playback system to enter the restricted mode, wherein: before entering the restricted mode, the local media playback system is in normal operation in which the first user is permitted to change a zone grouping configuration of one or more playback zones of the media playback system and to add content to one or more queues of the media playback system using the first mobile device; in the restricted mode: a plurality of mobile devices (300; 500; 630-633) of a plurality of respective users are permitted to access the local media playback system; each of the plurality of mobile devices is allowed to add content to one or more queues respectively associated with one or more playback zones, the one or more playback zones corresponding to a limited subset of the plurality of playback zones of the local media playback system; and each of the plurality of mobile devices is prevented from changing the zone grouping configuration of any playback zones of the media playback system; and while the media playback system is in the restricted mode and responsive to an input from a second user, adding a media item to a playback queue corresponding to a particular playback zone of the limited subset; and playing back the media item by a playback device (102-124; 200-204; 400; 640; 642) of the particular playback zone. in response to an instruction from a first mobile device (300; 500; 630-633) of a first user to cause the local media playback system to enter a restricted mode, causing the local media playback system to enter the restricted mode, wherein: before entering the restricted mode, the local media playback system is in normal operation in which the first user is permitted to change a zone grouping configuration of one or more playback zones of the media playback system and to add content to one or more queues of the media playback system using the first mobile device; before entering the restricted mode, the local media playback system is in normal operation in which the first user is permitted to change a zone grouping configuration of one or more playback zones of the media playback system and to add content to one or more queues of the media playback system using the first mobile device; in the restricted mode: a plurality of mobile devices (300; 500; 630-633) of a plurality of respective users are permitted to access the local media playback system; each of the plurality of mobile devices is allowed to add content to one or more queues respectively associated with one or more playback zones, the one or more playback zones corresponding to a limited subset of the plurality of playback zones of the local media playback system; and each of the plurality of mobile devices is prevented from changing the zone grouping configuration of any playback zones of the media playback system; and a plurality of mobile devices (300; 500; 630-633) of a plurality of respective users are permitted to access the local media playback system; each of the plurality of mobile devices is allowed to add content to one or more queues respectively associated with one or more playback zones, the one or more playback zones corresponding to a limited subset of the plurality of playback zones of the local media playback system; and each of the plurality of mobile devices is prevented from changing the zone grouping configuration of any playback zones of the media playback system; and while the media playback system is in the restricted mode and responsive to an input from a second user, adding a media item to a playback queue corresponding to a particular playback zone of the limited subset; and playing back the media item by a playback device (102-124; 200-204; 400; 640; 642) of the particular playback zone.