You can add multiple Rooms for adding your multiple devices. Please follow below steps:
Tap on 'My Room' on top left corner of the EPG page.
Tap on “Add Room”.
Name your room and proceed with the setup of your TV and later you can proceed other device.
You can access the devices you have setup by switching between the respective rooms
You can delete the rooms by following steps:
1. Go to App Settings.
2. Select the rooms you have setup.
3. Now you get a option of 'Delete room' at the bottom