Hello avauble,
There is currently no possibility to add those categories in a widget area. Do you want to show some categories (from projects or persons) in a widget area or do you want to show peron / project posts from an specific category?
I can see if we can make some widgets for that.
Maybe this should be helpful:
Klick me
actually working on it.
btw: i’m so into customizing your plugin/template, that i’m more lost than alice on lsd in wonderland :’D