How to set up robots.txt?

Question

Search Engine Optimization

Robots is set up. But one point is not clear.
I need the rubrics to be open for indexing, but the rubric pages are closed, i.e. there are no duplicate rubrics due to pagination.
Now I have this line in my robots:
Disallow: /category/*/*
http://site.ru/category/category/ - this should be indexed
http://site.ru/category/category/page/2/ - this is not necessary