Customise WordPress Dashboard for Clients

functions.php

function dcg_customise_dashboard() {
  // remove_menu_page( 'index.php' );                  //Dashboard
  // remove_menu_page( 'jetpack' );                    //Jetpack* 
  // remove_menu_page( 'edit.php' );                   //Posts
  // remove_menu_page( 'upload.php' );                 //Media
  // remove_menu_page( 'edit.php?post_type=page' );    //Pages
  // remove_menu_page( 'edit-comments.php' );          //Comments
  // remove_menu_page( 'themes.php' );                 //Appearance
  // remove_menu_page( 'plugins.php' );                //Plugins
  // remove_menu_page( 'users.php' );                  //Users
  // remove_menu_page( 'tools.php' );                  //Tools
  // remove_menu_page( 'options-general.php' );        //Settings
}
add_action( 'admin_menu', 'dcg_customise_dashboard' );