add_action('wcps_slider_main','wcps_slider_main_20200331', 10);
function wcps_slider_main_20200331($args){
?>
<p>Custom HTML under main</p>
<?php
}
add_action('wcps_slider_main','wcps_slider_main_20200331', 10);
function wcps_slider_main_20200331($args){
?>
<p>Custom HTML under main</p>
<?php
}