There are two sets of Category that can be created, Parent Category and Child Category (Sub-Category), and the listings can be added into those categories.
HOW TO ADD CATEGORY?
STEP 1: Login to WordPress admin dashboard.
STEP 2: Go to Listings > Categories
STEP 3: Enter a Name and Slug
STEP 4: Select Parent Category if creating a Sub-Category.
Description box is for SEO purpose. You need to install an SEO plugin (Example: Yoast SEO) in order for the meta description to activate.
STEP 5: Add Category Icon.
For step-by-step instructions read How to add an icons to a Category?
STEP 6: Add Category Banner.
STEP 7: Assign Category Features.
For step-by-step instructions read How to assign Features to a Category?
The specified features will appear on listing submission page, listing details page and search result page as part of the advanced filter as long as a category is selected.