Load Custom Models on HoloLens 2

I have loaded the Sketchup Viewer on my Hololense and used the AR/VR Extension to push a model to the device but it tells me I am unable to open custom models as I don’t have it licensed, how do I license the version on my HoloLens?

On my PC I have a “classic” single user license

Thanks

The access to the viewers is for subscriptions, only.