Kind greetings.

I originally posted this question in the Office 365 forums and was told to also post here: http://community.office365.com/en-us/f/158/t/257207.aspx

Any way to get this functionality in the Outlook desktop client?

Original question:

I have opened an additional mailbox in Outlook 2013 (File -> Account Settings -> Account Settings -> E-mail Accounts -> Change -> More Settings -> Advanced -> Open these additional mailboxes).  I am a owner on this account.  I can see the account, all the folders and all the calendars associated with the account.  I need to send a shared calendar invite to another user for the different calendars I have setup on this additional mailbox.  Unfortunately, the "Share Calendar" button is greyed out for all of the calendars (default calendar or custom calendar) on this additional mailbox. 

Is there a permission that needs to be turned on to make the Share Calendar link option available?  Or is the Share Calendar option greyed out by default for all Additional Mailboxes?

Thanks.

Peter W. Caton

It's off by default (and permanently) for shared mailboxes. Since you have owner permissions, close Outlook and create a new profile - use the account's email on the auto account setup page and your password. When the password dialog comes up, put in your login username and password. (It may ask for it twice.) Open outlook and you can use it like a normal mailbox,  including sharing the calendar, setting OOF or server side rules.  Screenshots and more info is here: http://www.slipstick.com/exchange/create-rules-and-oof-shared-mailbox/

Is there any progress or intent to fix this issue with Outlook? It's so simple it's quite maddening for many of my customers. Thanks!