Remove selective menu pages & meta boxes

function remove_menus_and_metaboxes(){
  
  if (current_user_can('manager')){
  remove_menu_page( 'index.php' );                  //Dashboard
  remove_menu_page( 'edit-comments.php' );         //Comments
  remove_menu_page( 'tools.php' );                //Tools
  remove_menu_page( 'wpcf7' );                   // Contact Form
  remove_menu_page( 's2' );                     // Subscribe 2
  remove_meta_box( 'dashboard_recent_comments', 'dashboard', 'normal' );
  remove_meta_box( 'dashboard_incoming_links', 'dashboard', 'normal' );
  remove_meta_box( 'dashboard_quick_press', 'dashboard', 'side' );
  remove_meta_box( 'dashboard_primary', 'dashboard', 'side' );
  remove_meta_box( 'dashboard_secondary', 'dashboard', 'side' );
  remove_meta_box( 'dashboard_right_now', 'dashboard', 'side' );
  }
  
}

add_action( 'admin_menu', 'remove_menus_and_metaboxes' );