How to sort products by their subcategories in OpenCart?

Question

opencart

Found many solutions for sorting by price, rating, etc.
But I need to sort the products in order by subcategories.
For example, I have a parent category "Clothing" which contains subcategories "Men's", "Women's", "Children's".
How to make it so that first the goods from the subcategory "Men's", then "Women's", "Children's" are displayed.
Now like this:

Men's_1 | Women's_1 | Children's_1 Men's_2
| Women's_2 | Children's_2 Men's_3
| Women's_3 | Children's_3

And I need it like this:

Men's_1 | Men's_2 | Men's_3
Women's_1 | Women's_2 | Women's_3
Children's_1 | Children's_2 | Children's_3

Answer 1

Found many solutions for sorting by price, rating, etc.

For example, replace the sort criterion with category_id