Tasks can be made inactive

Category

User Configuration > Administrative Templates > Microsoft Project 2016 > Project Options > Schedule > Scheduling options for 'Project1'

Scope

User

Registry Key

HKCU\software\policies\microsoft\office\16.0\ms project\options\scheduling

Description

This policy setting will allow tasks to be inactivated. If you enable or do not configure this policy setting, users will be able to use the Inactive tasks feature, and tasks are allowed to be inactivated. If you disable this policy setting, tasks cannot be inactivated.