How to update SPECIAL, NEW ARRIVALS and BEST SELLERS?

[smallpotato]

Zen Cart Version : 1.5.4

I joined a new company and took over an EC website developed with Zen-cart. The previous person in charge of the website didn't explain a lot, so I am not familiar with a lot of things in Zen-cart.

In the top page of the website, there is a carousel product slider that includes SPECIAL, NEW ARRIVALS and BEST SELLERS as a following screen shot.



I have no idea how to update these items?
Does anybody know that?

Below the section, there is a FEATURED PRODUCTS section, but I found how to manage these items.
Admin page -> Catalog -> Featured products

However, I have not found other menus that are enable to manage those items.