What is the explore page?
The explore page is a simple rendering page, that will display your listings, based on any criteria. It is like the blog page for your posts.
Global explore page
The global explore page will display all your listings, a combination of all your listing types.
How to create a global explore page?
Simple create a new blank page by going to Pages Add New, name it Explore (for example), then navigate to Listing Types Settings General Pages Explore page, and use the drop-down menu to select that same page. On the front-end, it will render all your listings automatically.
How to add a search form for your global explore page?
First, you need to create the actual search form, that you are going to use for your global explore page later. Once you have it, navigate to Listing Types Settings Explore General
Exclude listing type from your explore pages
You can have multiple listing types and the explore page will render them all. If you need to exclude any specific listing type, you can do it by going to Listing Types (edit the listing type) General Setup Hide from Global Search.