The Connect Device to Switch Group command is used to connect devices to a switch group. See the Switch Groups section for more information.
To connect one or more devices to a switch, go to
Ribbon: DM Electrical->Devices-> 
Connect Device to Switch Group
Pulldown Menu: DM Electrical->Switches->Connect Device to Switch Group
You will be prompted to select a switch.
Select switch:
You will then be prompted to select the devices you want to connect.
Select objects:
The devices will be added to the switch group associated with the switch you selected. A label indicating the switch group will be added to each device.