What most data collections need after creating a custom post type is to now create a custom taxonomy. As an example if you are using ACF Engine to build a real estate site, you might have registered “property” as a custom post type. Now in order to organize properties by the type of property such as apartment, house, land, you will want to create a hierarchal taxonomy named “property-type” for example.
Custom taxonomies are managed in the ACF Engine menu under “taxonomies”. See the full path below:
WP Admin > ACF Engine > Taxonomies
Assignment to Post Type(s)