User Configuration > Administrative Templates > Microsoft Project 2016 > Project Options > Calculation > Calculation options for 'Project1'
User
HKCU\software\policies\microsoft\office\16.0\ms project\options\calculation
Specifies how Project sets the fixed cost accrual for new tasks. If you enable this setting, new tasks will accrue fixed cost according to the specification you made. If you disable or do not configure this setting, the user's default setting is used.