Mike, thanks for your quick response.
What I want to achieve is to be able to upload picture files from my camera’s SD card straight to the external drive so that I’m not using up space on Drive C. I think I’ve found out how to do what I want to do.
I have created a new folder in My Passport, which I have named Pictures, and I’m currently transferring all of the existing picture files to that external folder. When uploading new picture files from the SD card, I’ll nominate an appropriate destination on My Passport. Once I’ve verified that all of the picture files have transferred, then I’ll delete them from the C drive, and free up much needed space. I’ve also disabled the Backup facility since I don’t need My Passport to do that for me,
I still have to figure out how to automatically back up this new folder on My Passport to the cloud, but I’m working on that.
As you suggest, I’ll manually transfer the files from My Passport to my home server. Cheers.