How to make advanced sorting of goods?

Question

opencart

Need help sorting items. Made the default sorting of products on the category page by price (in ascending order). But at the same time, several new products have appeared, which should be at the very beginning of the sorting (now these products go in the middle because of their price), and then the products should go in ascending order of price. Need help, tell me how to do it?

Website: http://fireplaces-krasnoyarsk.rf/katalog-kaminov/ochagi/

For example, the hearth "Vivaldi W10" should be at the very beginning of sorting, and now it is in the middle.

Answer 1

indicate in the selection where the selection is indicated at the price of another parameter by the date of addition