How do I insert a calendar as an item NOT attachment

[Intel]

When forwarding meeting invites, I would like to have the original invite
included as message test instead of attachment.

Please note that when I forward regular e-mails, the original e-mail is
included as message text and not attachment.

In "tools", "options", "Preferences", I selected E-mail Options tab and I
can see that when replying or forwarding an e-mail, my setting is properly
set to include original message text but this doesn't seem to work for
calendar invitations.