An update. For anyone else starting out with this - I found the following videos which simplified things greatly:
Adding Zigbee Devices to the Ruckus IoT Controllerhttps://www.youtube.com/watch?v=oqze7km_WlY
Adding BLE Devices to Ruckus IoT Controllerhttps://www.youtube.com/watch?v=UOpAWynFpbY
I now have a Hive Smart Switch, and a Philips Hue bulb as added IoT devices, and I can control them from the IoT controller interface.
What I could do with some help on now, is interfacing to this with NodeRED - not sure which node I'd start with, or how to pass requests to the controller.
Any help on that aspect, gratefully received!