There are Roku apps in the app guide, that help organize channels into groups of your choice. I don't recall the name of any of them. But there is at least one out there in the apps.
Not aware of anything like that.
It works, or at least worked a couple of years ago when I tested it. It is not the easiest to set up but it does get the job done.
Since I have less that 20 channels it really is unneeded for me but others might find it of use.
knuckle, the fastest keyboard in the west, beat me to the post. I think he cheats!!!