Add Plex to Parental Controls

I have a plex server which can be accessed via https://app.plex.tv

I also setup Parental Controls for my kids laptops, with access to spcific sites and apps during certain periods of the day.

It would be nice to allow/block Plex during those periods as well. Could it be added to the list of allowed Apps and Sites?

The other way would be to apply Recreation Time to the Deny list, which would be great.

Currently, the only way to block it is to add it to the Denylist, which blocks it indefinitely...