Iris Open/Close Sensor Help

I just installed 3 of the Iris open closed sensor & want to know how I can group them together in a separate folder or room.
Thanks Mike

Go in the app and click on room. Scroll down to the bottom and add a new room. Go inside the room and click on the gear at the top right corner to add devices to that room.

Thanks I knew there was an easy way to do just could not remember or find it