Here is another plugin that makes it easy to schedule appointments on your WordPress site. Simply Schedule Appointments for WordPress supports unlimited booking calendars. It is designed to work with Divi and Elementor. The premium version lets you accept Stripe & PayPal payments. It comes with Google Calendar sync.
You can use this plugin to limit how many appointments to schedule on a daily basis. It can handle client meeting, service, patient, rental, and other types of bookings. The premium version is ready for Zapier & Automate.io. It uses Twilio for SMS notifications.