Sort the goods by category

There are two sites. On one site there is a section "Scope of application" in it sections: "For the kitchen", "For the living room", "For the bedroom", etc. With subsections: "Candles", "bra", "Table lamps", "Lights", etc. You need to sort the goods according to the way done on the second site by the desired categories. The site is written in OpenCart. Who can do it quickly and efficiently?