To group multiple custom terminal devices, you need to have at least one custom terminal group first. Please follow the steps given below to create a new group:
After creating a group, all the devices that you want to group together must be added one by one. While adding the devices, choose the newly created group or the desired group from the Device Group drop down. You can also change the group for already added device. Any particular device can be part of only one group.
Note: A device group can also be created while adding the device by using the add icon next to Device Group drop down.