Add an extra feature to our site - wordpress

Hi everyone! :-) We got the site [login to view URL] which is a markedpage for fasion. The site is builed so that we can add some picture with a link and a price and the visitors would then be leaded to the site where the clothing can be buyed. The site is diffrient to other because we have made so that tbe visitors can select all kinds of clothing and the tap on "random", and some random clothing from all the diffrient webshops that have been connected to the site, will come up with the clothing. We need a feature so that we can add make new categories, for instance "Highend" or "Streetware", when the visitors then click on Highend clothing that have been added to the categori will apear on the site, and nothing else. But if the visitor select both Highend and Streetwear, both cloting from highend and streetwear will apear on the page. The site should be so that head units should be on a box, shirts should be on a box, pants should be on a box and so on - like it allready is, we just need to could make a whole new category that changes all boxes at the same time. I am on vacation now, and will be home on next friday. We don't expect the feature to be expensive, because the total of the site only costed 120$ Have a nice day! Cheers, Andreas ,