I am working with an organization that has many different web locations (SharePoint site collections) where they would like to save files. They would like them to show up in the Office 2013 "Save As.." dialog as a choice without having to click "Browse" and then "SharePoint Sites"... What kind of plugin would I have to do to write something that can be displayed in the File -> Save/Open dialogs with custom locations, without having to drill down into the Browse/Favorites?
The functionality is simple enough: I want to specify pre-set paths to set the path property of the dialog, that are visible in the top level of the dialog, as icons. Where do I start?