Right now YouTube channel creators need to a separate Google account for every YouTube account they have. However, it appears that YouTube is working on a new feature that will allow YouTubers to combine multiple YouTube accounts together under a single Google account, which will make for much easier management for us.
Also, YouTube announced some significant changes to YouTube channels and to the guide in the upper-right corner of the screen, but didn’t share exactly what they are. They just said that if you’re working on any significant channel design updates that you should probably wait and put your efforts into it a bit later.