How to share files between 2018 MacBook Air (Mojave) & 2014 Mac mini (High Sierra) on wifi network?
Hello, my 2018 MacBook Air (Mojave) & 2014 Mac mini (High Sierra) are on the same wifi network (the Mac mini is also connected by Ethernet to the gateway).
I have a file in my 2018 MacBook Air (MacB) drop box. I want to pick it up on the Mac mini (MacA).
I've been fiddling for hours with System Prefs > Sharing on both computers. The MacB drop box does in fact show up in the Mac mini Finder. I can open it but I cannot see the file it contains!
I made MacA an administrator of MacB. MacA shows up in the log-in, so that's established. I have given read-write permissions on both computers to the administrators and every user that might be me. (Permissions for Everyone are turned off.) I have also given these users permissions to the drop box on both computers AND to the file inside the drop box on MacB.
What do I need to do to make the file appear in the MacB drop box I can see on MacA?
Mac mini, macOS 10.13