Hi,
Place is the custom post type. Please read here for information about Understanding Places, Categories, Listings and Custom Post Types:
https://wpgeodirectory.com/docs/places-categories-and-listings/
If you want to add extra post types you will need this add-on: https://wpgeodirectory.com/addons/custom-post-types/
Create a CSV file to add all categories, doesn’t mean allowing users to add them, GeoDirectory doesn’t allow users to add categories, only admin can add categories.
A CSV file is a file similar to an excel sheet (you must use open office to edit it). You can download a sample file in GeoDirectory >> Import / Export for both listings and catgeories.
In this CSV file you can add as many categories as you want and bulk import them.
You can follow documentation here to read more about it: https://wpgeodirectory.com/docs/core-export/#import-cats
Thanks