So, here's the tutorial that I said I was working on (see
Part 1). It's not 100% complete, but almost (probably about
90%). It shows how to add a new category to the Basic Options view
(a.k.a. the Modern view) of the Options window—either in the
Miscellaneous panel or in a new panel of your own:
NetBeans
Options Window Extension Module Tutorial
Of course, complete source code is provided (via a download link
in the tutorial). So, you could download the source code and...