Services List Design

I’m setting up appointment booking for a salon but the shortcode are not generating columns and I don’t like the default design anyway. I want the services list to match my site design. But I don’t see much documentation regarding customization of the layout. One thing I’d like to do is generate the services list with a query loop block. With query loops, I can easily style the services list any way I want. Problem is the post type that salon-booking-system created is not registered as a CPT. What’s the easiest way to make the post type show up in the query loop block editor?