Hi @Steve Everett ,
From your description, it looks like you are having issues with sharing calendar in Outlook as the options Calendar Permissions is grayed out.
What the type of email account configured in Outlook (POP3, IMAP or Exchange Server Account)?
Sharing Calendar is a feature available only for Exchange Server account types. If the email account is setup as POP3, IMAP or EAS, then you may publish the calendar online to a WebDAV Server.
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