Thanks for the response.
I've also watched this YouTube video https://youtu.be/zQy5VojF0cA where this IT support person describes the same scenario, so hearing it yet again helps to solidify the landscape.
If I may persist with a question - Could this remote sharing be done with a VPN ?
If it's about file sharing with one remote user at a time, does a hosted cloud have to be the only method ?
And or, why would a hosted cloud be better ?