How to add beta channels to a Roku streaming device in place of the discontinued 'private' channels

Roku has discontinued private channels, so they can no longer be installed or used on Roku devices. In their place, Roku has introduced beta channels.
Yahoo

Is Hulu Actually Free on Roku? What You Need to Know

This article answers the questions of whether Hulu's free on Roku, how to install the Hulu channel, and find and watch Hulu content on your Roku. Is Hulu Free on Roku? The Hulu channel might come ...