How to add code in wplms customizer plugin

change the 50,40,60 here with actual course ids separated by comma in the below code

add this code in your wplms-customizer.php file in wplms customizer plugin : 

function vibebp_get_option_custom(){
    return [50,40,60];//change the 50,40,60 here with course ids 
}
add_filter('bp_course_total_count','hidden_courses');
add_filter('wplms_carousel_course_filters','wplms_exlude_courses_directroy');
add_filter('wplms_grid_course_filters','wplms_exlude_courses_directroy');
add_filter('vibe_editor_filterable_type','wplms_exlude_courses_directroy');
add_filter('bp_course_wplms_filters','wplms_exlude_courses_directroy');
add_filter('vibe_related_courses','wplms_exlude_courses_directroy');
add_filter('wplms_show_instructor_courses','wplms_exlude_courses_from_inst_profile');
add_filter('pre_get_posts','wplms_exlude_courses_from_directroy');
add_filter('pre_get_posts','wplms_exclude_courses_authors');
function wplms_exlude_courses_from_inst_profile($args){
    if($args['post_type'] == 'course'){
        if(is_user_logged_in() && function_exists('bp_is_my_profile') && bp_is_my_profile()){
            return $args;
        }else{
            $excluded_courses=vibebp_get_option_custom('hide_courses');
            if(!empty($excluded_courses)){
                if(!empty($args['post__not_in'])){
                  $args['post__not_in'] = array_merge($args['post__not_in'], $excluded_courses);
                }else{
                  $args['post__not_in'] = $excluded_courses;  
                }
            }
            
        }
    }
    return $args;
}
function hidden_courses($count){
    $excluded_courses=vibebp_get_option_custom('hide_courses');
    if(!empty($excluded_courses)){
        $count = $count - count($excluded_courses);
    }
    return $count;
}
function wplms_exlude_courses_directroy($args){
  if($args['post_type'] == 'course'){
    if(isset($args['meta_query']) && is_array($args['meta_query']) && is_user_logged_in()){
        $user_id=get_current_user_id();
        foreach($args['meta_query'] as $query){
            if(isset($query) && is_array($query)){
                if($query['key'] == $user_id){
                    return $args;
                }
            }
        }
    }
    $excluded_courses=vibebp_get_option_custom('hide_courses');
      if(!empty($excluded_courses) && is_array($excluded_courses) && !(isset($args['author']) || isset($args['author_name']))){
        if(!empty($args['post__not_in'])){
          $args['post__not_in'] = array_merge($args['post__not_in'], $excluded_courses);
        }else{
          $args['post__not_in'] = $excluded_courses;  
        }
      } 
  }
  return $args;    
}
function wplms_exlude_courses_from_directroy($query) {
  if ( !$query->is_admin && $query->is_main_query() && $query->tax_query) {
    $excluded_courses=vibebp_get_option_custom('hide_courses');
    $query->set('post__not_in', $excluded_courses );
  }
  return $query;
}
function wplms_exclude_courses_authors($query){
  if ( !$query->is_admin && $query->is_author && $query->is_main_query()) {
    $excluded_courses=vibebp_get_option_custom('hide_courses');
    $query->set('post__not_in', $excluded_courses );
  }
  return $query;
}

its working totally fine at my end . 

Please share your site url and admin creds in private reply