PS 1.6 Categories to subcategories

[Swerace]

If i click on a main category i see products in this category and not the sub categories. I want to see all sub categories under that category.

 

For example today: Main category - sub1 - sub2 - sub3

If I click  on Main category i comes to all products in main category. I want to come to the sub categories. 

 

This is a problem because i have many sub categories in my site. If i hide subcategories from top menu, it will be like I removed them from my site.  

Edited September 27, 2016 by Swerace (see edit history)

[Swerace]

Thanks for your answer! 

Is it much work with this? I don't love my theme, so if its big work, I think I take it as a sign to change theme

[rictools]

If i click on a main category i see products in this category and not the sub categories. I want to see all sub categories under that category.

In the default template in the modul themeconfigurator there's an option "show subcategories".