Apologies. Saturday afternoon and I didn’t look closely enough.
To mange simple applications (those that can be identified by single port (or port range) or by destination server ip). you can used the destination IPs / Ports on the device web ui.
For more complex applications (that use multiple server ips and ports) you can use outbound policies in InControl2 - this pushes complex, maintained, rulesets down to your device for SaaS apps like zoom, O365/teams, Salesforce and lifesize.
The application list you see when the destination is set to a SpeedFusion VPN connection, lets you optimise traffic for those applications that you are sending over SpeedFusion - so you can apply advanced techniques like wan smoothing or forward error correction to them.
What you want to do is create a generic rule to send all via SpeedFusion, then above that add a new set of outbound polcies to catch all traffic associated with youtube. @Rokas_Musteikis made a list here that seems to work: Outbound rule for youtube video - #2 by Rokas_Musteikis