Order of precedence for calendars

[JodyJ]

What is the order of precedence for calendars?

For example, I have a project calendar that has a non-work day defined
(let's say 7/20). All of my resources have their own calendars defined.
None of them has this day defined as a non-work day. How does MS Project
schedule work in this situation? Is there an order of precedence or does
Project read all calendars and then determine if work can be scheduled?

 

[Reid McTaggart]

Here is a very basic explanation.

Microsoft Office Project 2003 schedules tasks based on the project calendar
if there are not resources assigned, and then the resource calendar if a
resource is assigned to the task. So the working time (calendar) of a
resource overrides that of the project calendar. The Project Calendar only
affects the scheduling when there are no resources assigned to a project.
Once a task has assignments it is scheduled on the basis of the resources
calendar... unless you use a Task Calendar:

If you create a calendar for a task and later assign a resource to it, the
task may be affected by nonworking time in a resource calendar. Microsoft
Office Project 2003 schedules tasks based on the project calendar, and then
the resource calendar if a resource is assigned to the task. If a task
calendar is applied, Project ignores the project calendar. If a task calendar
is applied and a resource is assigned, Project schedules the task according
to the task calendar and then the resource calendar. You can choose to let
the task calendar override the resource calendar when scheduling the task,
but be aware that the assigned resource may have work assigned during its
nonworking time.