Icloud calendar as default calendar

Hi,
I am trying to move away from Outlook. What I have setup:

  1. I have email set up and working.
  2. I have my Mac’s iCloud calendar account added as a Caldav.

My problems:

  1. When viewing the accounts, the calendar is listed. When going to the calendar section to view appointments, the calendar is not listed.

  2. If I try to set the icloud calendar as the default for the email I have setup, it is not listed.

  3. Does emClient 2-way sync with icloud calendar?

I am on a mac using Ventura 13.7.5
emClient version: 10.3.1720

Thanks for the assistance
Best regards, Amanda

Two print screens to assist you below: