Follow these instructions to create a channel that can have multiple managers or owners.
You can use a Brand Account to create a channel that has a different name but that's still managed from your Google Account. Learn more about Brand Accounts.
Sign in to YouTube on a computer or using the mobile site.
Choose to create a new channel or use an existing Brand Account:
Create a new channel by clicking Create a new channel.
Create a YouTube channel for a Brand Account that you already manage by choosing the Brand Account from the list. If this Brand Account already has a channel, you can't create a new one—you'll just be switched over to that channel if you select the Brand Account from the list.
Fill out the details to name your new channel and verify your account. Then, click Done. This creates a new Brand Account.