Sync settings to a folder (not iCloud or DropBox)

Hi there,
I use BTT on a computer with two different OS accounts signed in with two different iCloud accounts. So iCloud syncing doesn't work for me. I also don't have DropBox.

What I'd like to do is sync my settings to a folder that both accounts have access to. I've done this with other apps where the app's settings are a symbolic link to a shared iCloud Drive folder.

I tried doing this with BTT, but it's not working. Am I doing something wrong? Or can someone explain how settings are read/written?