No entries in different calenders possible - "write-protected"

Dear all
How can I remove “write-protection” in my calenders of the emClient? If I want to make any change in the calender, it´s refused due to write-protection.
Thanks in advance

What calendar are you using ? Its it a local emc or cloud shared calendar and if so which one ?

Shared calenders by different users. Via exchange-server.

You will need to ask them to delegate the calendars to you with full write permissions.

Thx Gary, obviously it´s possible via invitation, but several employees need to monitor different calendars and it is not possible to name these calendars individually. Any idea how we can fix the naming of different calenders?

The delegated calendar names are those provided by the server. Unfortunately you can’t change them.