Like the vendor invoice policies, the project timesheet policy should have the option to apply different policies to different scenario’s. For example, if a project resource is associated to a default calendar of 20-hour, this resource doesn’t have to comply with the company project timesheet policy which is 40-hours but rather has to comply with the 20-hour project timesheet policy. The policy can then ensure that every resource can only submit the timesheet if their timesheet includes the number of hours prescribed by their calendar.