Move parent device to another room, but leave the two child devices in their current rooms. Child devices listed should have the device.parentRoom = false.
Request:
{ "method": "hub.device.room.set", "id": "_ID_", "params": { "_id" : "_OBJECT_ID_", "roomId": "_OBJECT_ID_", "separateChildDevices": [ "<childDeviceWithParentRoomFalse1>", "<childDeviceWithParentRoomFalse2>" ] } }