Add this code in child theme functions.php file or wplms customizer/wplms_customizer.php file :
add_filter('vibe_unit_duration_parameter','wplms_custom_unit_parameter'); function wplms_custom_unit_parameter($return){ $return = 1; //set to 1 second. return $return; } add_filter('wplms_curriculum_time_filter','wplms_custom_unit_curriculum_time_filter',10,2); function wplms_custom_unit_curriculum_time_filter($html,$min){ $minutes=0; $seconds=0; $unit_duration_parameter = apply_filters('vibe_unit_duration_parameter',60); if($unit_duration_parameter == 1){ // Checks if unit duration parameter is set in seconds if($min > 60){ $minutes = intval($min/60); $seconds = $min - $minutes*60; }else{ $seconds = $min; } $html = '<span><i class="icon-clock"></i> '.((isset($minutes) && $minutes)?$minutes.__(' Minutes','vibe'):'').' '.$seconds.' '.__('seconds','vibe').'</span><b>'.((isset($hours) && $hours)?sprintf('%02d',$hours):"00").':'.sprintf('%02d', $minutes).'</b>'; } return $html; }