I have a YouTube channel under my (adult) account where my kid posts videos. I'd like to add him as a member of the channel, officially but when I try to add him, I get this message:
I tried setting the permissions using the other method, via the Brand Account. In that case I didn't get an error when I invited him but the invitation email never showed up in his inbox.
Note that his account (probably obviously) is a child account, and he is a member of Google Family. I did try moving him up a tier in YouTube Family > Content Settings, but it didn't help.
I couldn't find any documentation indicating who is / is not allowed to be part of a channel. Anyone have any suggestions?