The MindGenius help documentation explains in detail how to work with files hosted in SharePoint. As a first step in getting up and running it's a good idea to read over the documentation.
To access the help file on SharePoint:
- Start MindGenius and wait for it to load
- Strike the "F1" key twice in quick succession to open the help documentation
- Open the "How To..." folder by clicking on the [+] icon next to it
- Scan down to the bottom of the list and open the "Use Maps Hosted on SharePoint" folder in the same way
- Read each of the topics