Noob question - Conbee stick

Apologies for the stupid question - just trying to get diyHue working. Using Docker for Windows (learning curve but worked ok), set up in bridge mode. I can access the web interface fine, but can’t see how to tell diyHue to use the Conbee 2 stick. It’s in a USB port on the host (my laptop for testing / learning purposes). Am I missing a fundamental step, or have I completely misunderstood how this works?

The object of the exercise is to replace three maxed-out hubs with one that can be accessed via one app (Hue Essentials is perfect).

Thanks, Pete