plugin development points

function create_menu() {

add_menu_page('cm panel', 'Resigistration', 'subscriber',  __FILE__, 'settings_page');

add_submenu_page(  __FILE__, 'New_Resigistration', 'New_Resigistration', 'manage_options', 'my-submenu-handle1','settings_page');

add_submenu_page(  __FILE__, 'User_Details', 'User_Details', 'read', 'my-submenu-handle2','section_1');

add_submenu_page(  __FILE__, '', '', 'manage_options', 'my-submenu-handle3','section_2');

add_submenu_page(  __FILE__, 'Old Dancer', '', 'manage_options', 'my-submenu-handle4','section_3');
}