YouTube Collaboration

https://support.google.com/youtube/answer/6109639?hl=en

In YouTube

Home > Library > Customize Channel > PlayList > New PlayList > Name it > Create
Add 1 video to this PlayList
In Play List > Edit > PlayList Settings > Collaborate > Turn On
Get Link
Email the link to your collaborators

Collaborator will need to “Add to this PlayList as…..”  Click Continue.

This PlayList will now be available for your video collaboration.