User Configuration > Administrative Templates > Microsoft Office 2016 > Collaboration Settings
User
HKCU\software\policies\microsoft\office\16.0\outlook\options\mail
"Enable 'send for review"': Enables the Send For Review feature. | "Exclude author's e-mail in documents": Enables the Send For Review feature, but the authors e-mail is not recorded on the sent document. | "Disable 'send for review"': Disables the Send For Review feature.