Hey,

what should I do to have a category list (I am using k2 tools module) ordered by item counter and limited to, lets say, 5 categories?

Now it is:

Categories

category a (3)
category b (1)
category c (7)
category d (2)
category e (2)

I want it like this:

Categories

category c (7)
category a (3)
category d (2)
category e (2)
category b (1)

and I want the first 5 categories that has the most items in them.

is it possible to achieve that? Where should I start?

Using the Categories List (Menu) Settings you can change the ordering to alphabetical or ordering but there is no option for categories with the most items or a limit.

For other listing and filtering options you can check the JED or getk2.org/extend .