Login here: http://www.globalgiving.org/non-profits/

Scroll down to "Your Projects" on the project entry (pe) dashboard and find the project that you would like to edit

Go to the "Photos & Documents" tab. Scroll down to the "Project Video" section.

Enter your video's YouTube link. Your video must be on YouTube.com to be embedded in your GlobalGiving project page. GlobalGiving does not accept videos from Vimeo and other video sites.

Don't forget to "save and submit"!