How can I join an ics remote calendar? I have to join a shared calendar for which i have a https url (like https://servername:5006/calendar/calendar.ics)

How can I join it on the Calendar App?
I only managed to subscribe to it, although when subscribing I cannot add my own events but only see what others are publishing.

It works perfectly using Thunderbird Lightspeed, but I want to be able to use the Calendar App for my convenience
Solution found by myself:
I needed to create a new local calendar (possibly importing the ics file downloaded from the server) then publish it at the same address such that it is now localized there