This is an example of a Calendly software link available with a free Calendly account. (Advanced options cost $8-12 per month.)
This can be added as a button (shown below) or as a menu option, and it will be directed to your personalized link within Calendly.
– Click button to see an example of Calendly –
This is an example of a software plugin that comes with the WordPress Business Hosting Plan ($300/yr).
This can be added as a button, menu option, or as part of a page (shown below), and is contained within a page on your website.