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 task type for new tasks. If you enable this setting, new tasks will be set to the type that you specified. If you disable or do not configure this setting, the user's default setting is used.