User Configuration > Administrative Templates > Microsoft Office 2016 > Global Options > Customize
User
HKCU\software\policies\microsoft\office\16.0\common\toolbars
This policy setting allows roaming of both the Quick Access Toolbar and Ribbon customizations. If you enable this policy setting, users' Quick Access Toolbar and Ribbon customizations will be available to them on any computer on their network when they log on. If you disable or do not configure this policy setting, users' Quick Access Toolbar and Ribbon customizations will only be available to them on the computer on which they made the customizations.