### Multihead Groups

Sun Ray Server Software supports the use of multiple displays connected to a single keyboard and pointer. This functionality is important for users who need extra screen real estate, for instance, to monitor many applications or systems simultaneously or to accommodate a single application, such as a large spreadsheet, across multiple screens. To use multiple screens, set up multihead groups, consisting of up to 16 DTUs with the `utmhconfig` GUI utility or the `utmhadm` command.

Each multihead group is controlled by a primary DTU to which a keyboard, a pointer device, and any USB devices are connected. The remaining DTUs, called secondaries, provide additional displays. From an architectural perspective, you can imagine a multihead group as a single DTU (the primary DTU) with multiple screens attached. If you search for multihead groups in the Admin GUI, the search result list will always contain the properties of the primary DTU (identifier, location and other information) followed by the multihead group name and geometry.