View only primary category (under title in post)

Activello
1

Hi.
In the view of single post, I would like to see only the main categories, not the subcategories. How can I proceed?
I am referring to the categories that appear under the title.
Thanks for your response.

2

Hey there

Let me see it, please provide a link to that post

3

Hi.
here the link: https://www.facciamoscuola.it