User Configuration > Administrative Templates > Microsoft Project 2016 > Project Options > Schedule > Scheduling options for 'Project1'
User
HKCU\software\policies\microsoft\office\16.0\ms project\options\scheduling
Specifies the default unit of time (minutes, hours, days, weeks, or months) used in the Work field in the current project. If you enable this setting, whenever Project displays work values, the unit you specified will be used. If you disable or do not configure this setting, the user's default setting is used.