User Configuration > Administrative Templates > Microsoft Outlook 2016 > Outlook Options > Preferences > Calendar Options
User
HKCU\software\policies\microsoft\office\16.0\outlook\options\calendar
This policy setting controls whether Outlook automatically displays the meeting time and location in the meeting request body. If you enable this policy setting, Outlook automatically displays the meeting time and location in the meeting request body. If you disable or do not configure this policy setting, Outlook does not automatically display the meeting time and location in the meeting request body.