Mapped Drives on Office 365 on Mac

Hi all,

I have a client who needs to access Office 365 on their mac,

I understand that Microsoft Document Connection works like a mapped drive however I need an option that is accessible within finder,

The reason behind this is the client stores images on sharepoint and then needs to be able to upload them to a website that uses finder as the document locator,

Are there anyways out there that people know of to resolve this?

Thanks