register plugin page to avoid "do not have permission" error

Although this post is unanswered and rather old, here is the solution I used. It may not be the best way but it works here. YMMV.

In the plugin init area, declare an action for “admin_menu” with a function to do the bulk of the work.

// administration page
	add_action('admin_menu', 'my_admin_actions');

The function adds a line to the admin side, and most importantly, adds a sub menu item that is associated with a call to admin

function my_admin_actions() {
  // user registration
  // help: add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $function, $icon_url, $position )

  // application administration Menu
  // help: add_menu_page( $page_title, $menu_title, $capability, $menu_slug, $function, $icon_url, $position )
  add_menu_page('My Administration', 'Administration', 'activate_plugins', 'my-admin', 'my_admin_main');

  // help: add_submenu_page( $parent_slug, $page_title, $menu_title, $capability, $menu_slug, $function);
  // help: the function parameter refers to the functions defined in this file. Note that each function name here also is defined in the next section

// location based class list and editor
  add_submenu_page('admin.php?page=', 'Administration', 'Editor', 'activate_plugins', 'my_admin_editor', 'function_my_admin_editor');

By using “admin.php?page=” as the first parameter of add_submenu_page, you asking WordPress to look for a page name (my_admin_editor) instead of a menu slug in the normal way.