YouTube is not only about sharing your personal videos, it's also about promoting the work of other people. This guide will teach you how to add Featured Channels to your YouTube channel homepage. In doing so, you will help your subscribers discover new and interesting videos.
Sign in to YouTube and then click on the Menu button > My Channel:
Move to the Featured Channels section and click on + Add channels:
Type the name or URL of the desired YouTube channel and then click Add. Repeat the operation to add more channels to your Featured Channels list and click Done when finished: