Out of the box, the plugin creates a "Businesses" post type, a business category taxonomy, and a metabox for collecting business information. Every aspect of this is customizable. All of this code goes in your theme's functions.php file.
To remove the post type:
apply_filters( 'interstrategy_business_listings_post_type', '__return_false' );
To remove the taxonomy:
apply_filters( 'interstrategy_business_listings_taxonomy', '__return_false' );
To remove the metabox:
apply_filters( 'interstrategy_business_listings_metabox', '__return_false' );
To customize the post type, taxonomy, or metabox, use the interstrategy_business_listings_defaults filter. This filters an array which contains the following: https://gist.github.com/1327899
Let's say you wanted to turn this into a members directory. These are the changes you want to make:
- Update the post type labels to use Members instead of Businesses
- Change the post type and taxonomy slugs to members and member-category, respectively
- Change the title and post type for the metabox.
Here's the code you'd use: https://gist.github.com/1327991