Sometimes you simply want to lock access to Gravity Forms to only logged in Administrators. This function will allow you to hide the Gravity Forms menus and sub-menus for every logged in user except Admins.

// Only show WordPress menus to Administrators

function hide_wordpress_menus() {
    if( !current_user_can( 'update_core' ) ):
		remove_menu_page('edit.php?post_type=page'); // Pages
		remove_menu_page('edit-comments.php'); // Comments
		remove_menu_page('upload.php'); // Media
        remove_menu_page('tools.php'); // Tools
		remove_menu_page('edit.php?post_type=bne_panels'); // Panels Plugin
    endif;
}
add_action( 'admin_menu', 'hide_wordpress_menus' );