How do I create a virtual 4 way setup in the new V3 app?

There are no device alternatives for what you want to do because association is no longer done the same way with Z wave plus, it’s more complicated.

Instead, people use a software alternative, which is the “Z wave Tweaker.“ it’s easy, you are just going to copy and paste that code into your account so that you have that device type handler in your library. Then you will use the IDE to temporarily assign A device to the Tweaker. You open the tweaker in the smartthings app and set whatever associations or parameters you need. Those will be saved in the device itself. So then you can switch back to the regular DTH for that device.

For more information on the tweaker, see the following:

[OBSOLETE] Z-Wave Tweaker

All of that said, if you’re just setting up a three-way switch, you don’t need the mini mote and you don’t need the tweaker. Just use the official SmartThings features to have one switch mirror the other.

But I answered this in more detail in your other thread. :sunglasses: