I need additional functionality added to a WordPress site with a custom-built scheduling section that syncs through the Google Calendar plugin. Currently, visitors can select exact dates, but I require an ordinal-weekday option (e.g., “second Tuesday” or “first Friday” of every month) to be added. This includes updating both the front-end selector and back-end logic while ensuring seamless integration with the existing Google Calendar sync. The stack involves WordPress with custom PHP and JavaScript, so adherence to these conventions is essential. Please maintain the current UI styling intact.