No, you need to open the calendar item and add them to the attendees.
Select the option to only send to the newly added person, if you only want
them to see the update.

Signature
--?
Milly Staples [MVP - Outlook]
Post all replies to the group to keep the discussion intact. Due to
the (insert latest virus name here) virus, all mail sent to my personal
account will be deleted without reading.
After furious head scratching, Tom asked:
| Hi there,
|
[quoted text clipped - 11 lines]
|
| Tom