I have mine in. I used the GE brand of fan switch. I also used the GE on / off for the light. With it’s companion switch.
I don’t have my drawing anymore. That doesn’t matter because your wiring will most likely be different. I do remember I had to use a neutral from a different switch for my remote switch. It was a light on the same circuit in the other box.
Be aware smart switches do not wire up like your current dumb switches. You’ll need to look at the instructions.
If you haven’t already you might want to read through this thread.