R750 supports in-built Zigbee and BLE. It does not have Z-Wave inbuilt feature. Could you please re-confirm from where you got the info?
If you need Z-Wave feature to work, then you need Samsung Smart Hub Dongle on the AP. The AP (Connected to Smartzone) should be managed by the IOT controller to make this feature work.
Check the below link and refer page 34 for more information.
Yes, you need licenses on the IOT controller and the Smart Zone.
It would be great if you can contact your local sales so that they can help you with the setup details and the licenses.