For your requirement, as I know, there may be no option in Outlook client that could meet it directly. But if you just would like to send multiple calendar invitations faster or easier, as a suggestion, we could try to save a template (or some templates) with some general attendees or description, so that we could open your local template and modify it directly when we need to send an invitation. Here are the detailed steps : creat a template : New meeting> type your general information>File>Save as>choose .oft, use the template : New item>More item>choose form>User Templates in File System>choose your form.
If you still need more information about macro, due to I mainly focus on general issue on Outlook desktop client, I know little about macro and scripts. But based on my research, I found a related article: Create Appointments Using Spreadsheet Data , which mentioned some excel macros, please kindly check if it could also be helpful to you. (Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)
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