Here is what zachary.cayou started with and I followed initially.
This was my addition
We are using the Zooz S700 stick with either a PC, or Raspberry pi. I am using Home assistant with the stick as primary controller and connecting the IQ Panel 4 as secondary.
The biggest thing I have found is when you do an NVM backup using Z-Wave PC controller from Silicone Labs, you have to do a restore of that same backup so that it will communicate again with the IQPanel 4.
Test the connection to the primary controller every once in a while to make sure they are still talking before trying to include a new device.
I carry the IQ Panel 4 and laptop with me so that they are close to each new device I am including and that has been very successful even on battery powered devices.