browse
1. Create rule in web policy blocking Youtube as application
More details how to configure application settings in policies here
https://docs.umbrella.com/umbrella-user-guide/docs/advanced-app-controls
2. Create new destination list Policies->Destination Lists->
googlevideo.com
www.youtube.com/s/player
www.youtube.com/s/desktop
and list of videos you want to allow
eg. www.youtube.com/watch?v=zEJn6eQO6FE
Create rule in web policy with destination list as Destinations and action Allow above the Block Youtube rule created in first step
Note:
HTTPS decryption should be enabled in policy for this to work
