Hi,
We can create a custom form for your meetings to achieve the goal. To do this, please follow:
1. Click Developer tab from Ribbon. If you can't see the Developer tab, you will need to enable it from File > Options > Customize Ribbon.
2. Click Design a Form button.
3. In the Standard Forms Library, double click Meeting Request.
4. In the opened Meeting Request form, type the email address in the To field.
5. Click Publish > Publish Form As, select Personal Forms Library from the Look in drop-down list. Give a Display Name to the custom form, such as New Meeting. Click Publish button.
6. Now, go to your Outlook Calendar module. Right-click your default calendar, select Properties.
7. Click the drop-down list next to "When posting to this folder, use", select Forms...
8. Switch to Personal Forms Library and select the "New Meeting" form you just created. Click Open button.
9. Click OK.
10. Now try creating a new meeting to see the result.
Hope this helps.
Regards,
Steve Fan
TechNet Community Support