User Configuration > Administrative Templates > Microsoft Outlook 2016 > Account Settings > Exchange
User
HKCU\software\policies\microsoft\office\16.0\outlook\rpc
This policy setting allows you to determine whether users can view and change user interface (UI) options for Outlook Anywhere. If you enable this policy setting, users can view and change UI options for Outlook Anywhere. If you disable or do not configure this policy setting, users will be able to use the Outlook Anywhere feature, but they will not be able to view or change UI options for it.