This page is automatically generated by WordPress and it's your listing archive. There are some options you can set about this page under different menu voices.
You can set a listing item as "featured". This will take it on top of the archive listing page. In order to set a listing as featured, go to Dashboard → Listings → All listings → Edit → Listing options → Additional info.
Number of listings
You can set the number of listings you want to show per page. This will affect on the pagination of your archive page listing.
Go to Dashboard → Theme options → Listings and set the number.
Archive listing description
You can set a description for a specific archive listing page. For example, you can set a description for the "Activities" category archive page. In order to insert it, go to Dashboard → Listings → Categories.