Calendar Automation Planning

Hello, I ask you for your help with the following shortcut project:

  1. Select a specific calendar from a List or Ask every time.
  2. Search all appointments in this calendar between 08:00 and 17:00 for the entire week.
  3. Block all periods in which there is NO appointment with new appointments with the new appointment named as an example “FL” (between 08:00 and 17:00).

Is it possible to do something like this with shortcuts? Thank you for your help.
Br, Wolfgang