An "easier" method to run winbox on Catalina: - Install Mac Brew by following the single step instruction found at: https://brew.sh/index_en - Install wine from Mac Brew: brew install wine - In your Mac home create a folder called winbox and put winbox64.exe there - Test if everything works by open...
I would leave each router port in their default port 8291. And do the natting in the main router: i.e: 8291 -> 8291 ( main router)
8292 -> (xxx.xxx.xxx.xxx:8291)
8293 -> (xxx.xxx.xxx.xxx:8291)
8294 -> (xxx.xxx.xxx.xxx:8291)