A control system for managing operation of a plurality of thermostats includes a server comprising a processor, a memory, and a communication interface. The memory device stores instructions that when executed by the processor cause the processor to display, on a display device of a computing device, a visual representation for each thermostat of the plurality of thermostats and one or more groups into which each of the plurality of thermostats is grouped, and further to assign an operating schedule to a group, apply the assigned operating schedule to each thermostat of the plurality of thermostats located in the group, and move one thermostat of the plurality of thermostats from a first group to a second group in response to a user dragging and dropping a visual representation of the thermostat on the display device from the first group to the second group.