Add a CalDav Calender Server with WebCalendar and Share
Thank you for your input! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.
P.S. You can write your own extension with help of this documentation – https://docs.plesk.com/en-US/obsidian/extensions-guide/plesk-extensions-in-a-nutshell.76331/