You wouldn’t normally be using that with smartthings platform, but the way that you would if you had one is to add it as a secondary controller to your existing smartthings hub. It will only know the devices that existed on the Z wave network at the time that it was added, it won’t pick up new ones.
Some people do do that in order to be able to use the mapping utilities available on the secondary.
See the following for a discussion of the basic approach, although with a different brand
FAQ: Is there a way to see the Zwave mesh network map?
But honestly, your best bet is to ask on the Inovelli forum.