The possibility to add a "Post-it" in the Calendar view#4974

It would be great to be able to add a sort of sticky note to remind employees to complete a task on that specific day and time.

In addition to appointments, events, and unavailable dates, there should be an option for a simple note.

Example:

Date: May 30, 2026
Time: 4:00 PM
Employer: XYZ
Note: Remember to send documents to client Z

I believe this would greatly enhance the plugin, eliminating the need for users to rely on communication outside the system.