Syncing from two locations

Hi.  Running OneDrive for Business on a Mac.    
I have set up OneDrive to sync the necessary files from "MyFiles" location on our Sharepoint server.
We also have some group documents which I want to sync down to my iMac.  

OneDrive seems to offer the opportunity to sync from multiple locations, but I cannot see how to do this.

Also having set up my OneDrive account on my iMac, and go to select the folders I want to sync, I only see those in "My Files" and cannot path to the group files.

Clearly I am missing or not understanding something.  Would be ever so grateful if someone could point me in the right direction!

Many thanks