Desktop And FolderItem And OneDrive, DropBox, GoogleDrive

Are there any methods or whatever that need to be added to an app in order to use OneDrive, DropBox, or GoogleDrive. I think it’s not networking, so I don’t think I have to add anything special. If I do it’s something unique.

Dropbox on macOS should be transparent to use. I don’t use OneDrive or GoogleDrive but they should be the same.

What are you trying to do and what is not working?

Thank you. It seemed that way, but sometimes there are gotcha

Dropbox comment Moved to a new thread.

I am simply trying to add alternate storage or off desktop storage.