1. Navigate to Communities > Special Events > Friends Asking Friends > Kintera Thon
2. Hover over the Thon Name  and select  Webinfo Checklist.
3. Click Website Features.
4. Click Image and Text Library for Page Customization
5. Click Manage Videos.

To Delete Video:
Find Video and Click Delete.
Click Finish and Update Event.

To Add Video: 
Enter in Video Title.
Paste Video URL.
Click Submit.
Click Finish.