A user can easily apply load more button/infinite scroll in post listing, when he has multiple posts. He can use one of them for pagination style.

loadmorebuttonbackend

Follow some easy steps to apply load more button/infinite scroll in listing :-
Step 1 First of all go and click on Manage Templates menu of WP Post Pro Plugin, a new window will appear with list of all templates.
Step 2 Choose one of them for applying changes in post listing and click on Edit link.
Step 3 Scroll down on Pagination Settings section and tick on Apply Pagination. Some new option will appear.
Step 4 Now tick on:-
A. Load More Button :- Load More button will appear in listing.
B. Infinite Scroll :- Works same as Load More but difference is it will automatically load the remaining posts when you scroll down.

Step 5 At last click on Save Templates button for applying changes in post listing.

A. Load More Button
loadmorebutton

B. Infinite Scroll
infinitescroll

Video Tutorial