grasycho

Ok, found my own answer;

function add_menu_parent_class( $items,$args ) {

		if( is_admin() ||  $args->theme_location != 'author-menu' )
		return $items;

		$redirect = ( is_home() ) ? false : get_permalink();

		if (is_user_logged_in() &&  $args->theme_location == 'author-menu')
		{

			$userdata =  wp_get_current_user();

			$link = wp_logout_url( $redirect );

			$link_profile = array (
				'title'            => 'Logout',
				'menu_item_parent' => 7618,
				'ID'               => '234234234234234',
				'db_id'            => '234234234234234',
				'url'              => $link,
			);

			$items[] = (object) $link_profile;
		}
		else
		{

				$link = 'https://gfxbuy.com/sign-in';
				$link_logout = array (

				'title'            => 'Login',
				'menu_item_parent' => 7618,
				'ID'               => '5746734534',
				'db_id'            => '5746734534',
				'url'              => $link,
			);
			$items[] = (object) $link_logout;
		}
	return $items;
}
add_filter( 'wp_nav_menu_objects', 'add_menu_parent_class',10,2 );