Default Directories for additional apps

I typically add games one at a time and then I’ll add manuals, readme’s, etc as additional apps within LaunchBox. Those documents are located in unique folders based on the system the game is associated with. When adding Additional Apps, LaunchBox will bring me back to the roms folder where I most recently imported a rom from. It would be helpful if I could designate a default starting folder when adding roms and a separate default starting folder when adding media (additional apps) so I don’t have to navigate through several folders every time I want to add a document. Thank you for your time.