Acal

Figured it out. I inherited this site so I’m learning this theme. To add more slides than 3 you need to go to header.php > modify :
<?php query_posts( 'posts_per_page=3&post_type=sliders&order=DSC' ); ?>
to read:
<?php query_posts( 'posts_per_page=4&post_type=sliders&order=DSC' ); ?>
You can also sort in descending (DSC) or ascending order (ASC).

For both changes you will need to make the adjustment three times as the query_posts() functions shows three times in my theme. Once each for the image, caption, and “paging” functions which should all be set to the same values.

Tough to find proper documentation / happy to contribute!

<?php if (is_front_page()) { ?>

      <div id="slider">
        <div class="main_view">
            <div class="window">
                <div class="image_reel" style="width: 2790px;">
                	<?php query_posts( 'posts_per_page=4&post_type=sliders&order=DSC' ); ?>
                    <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
                    <a>"><?php the_content();?></a>
					<?php endwhile; ?>
                   <?php endif; ?>
                </div>
                   <?php wp_reset_query(); ?>
                <div class="descriptions">
                	<?php query_posts( 'posts_per_page=4&post_type=sliders&order=DSC' ); ?>
                    <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
                    <div class="desc"><p><?php the_title(); ?></p></div>
					<?php endwhile; ?>
                   <?php endif; ?>
				</div>
                   <?php wp_reset_query(); ?>
                </div>

            <div class="paging">
                	<?php query_posts( 'posts_per_page=4&post_type=sliders&order=DSC' ); ?>
                    	<?php $i = 1; ?>
                    <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
                		<a>" href="<?php bloginfo('url'); ?>/#"><?php ?></a>
					<?php endwhile; ?>
                   <?php endif; ?>
            </div>
                   <?php wp_reset_query(); ?>
        </div> }?>