Filters the upload size limit for community events submission form only

functions.php

<?php
/**
 * Filters the upload size limit for community events submission form only
 *
 * @param string $size Upload size limit (in bytes).
 * @return int Filtered size limit.
 */
function set_max_upload_size_limit_community_events_submission($size){
  
	if ( tribe_is_community_edit_event_page() ){
		$size = 1024 * 10000; //Limit to 10MB
	}
	return $size;
  
}
add_filter('upload_size_limit', 'set_max_upload_size_limit_community_events_submission');