That's it. No further installation required. Only Microsoft Excel and Word are needed.
Remark: Please note that the author of EFS is no professional programmer and had no chance to test the Excel Filing System with various different computer
systems. Anyway EFS is working solely with the standard installation of Microsoft Office and didn't create problems so far.
EFS has been developed at computers running Microsoft Windows 7 and Microsoft Office 2010.
Nowadays running on Windows 10 and Office 365 of course.