If you create a calendar (calendar: The scheduling mechanism that determines working time for resources and tasks. Project uses four types of calendars: the base calendar, project calendar, resource calendar, and task calendar.) for a task (task: An activity that has a beginning and an end. Project plans are made up of tasks.) and later assign a resource (resources: The people, equipment, and material that are used to complete tasks in a project.) to it, the task may be affected by nonworking time (nonworking time: Hours or days designated in a resource or project calendar when Project should not schedule tasks because work is not done. Nonworking time can include lunch breaks, weekends, and holidays, for example.) in a resource calendar (resource calendar: A calendar that specifies working and nonworking time for an individual resource. A resource calendar differs from a base calendar, which specifies working and nonworking time for more than one resource.). Microsoft Office Project 2003 schedules tasks based on the the project calendar (project calendar: The base calendar used by a project.), and then the resource calendar if a resource is assigned to the task. If a task calendar (task calendar: The base calendar that you can apply to individual tasks to control their scheduling, usually independent of the project calendar or any assigned resources' calendars. By default, all tasks use the project 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 (work: For tasks, the total labor required to complete a task. For assignments, the amount of work to which a resource is assigned. For resources, the total amount of work to which a resource is assigned for all tasks. Work is different from task duration.) assigned during its nonworking time.

• To see if a task has a task calendar assigned, look for the indicator (indicators: Small icons representing information for a task or resource that are displayed in the Indicators field. The Indicators field is located to the right of the ID field and appears in a number of tables.) in the Indicators field (indicators field: A field containing a graphical indicator that provides information about the state of an assignment, resource, or task. For example, a check mark indicator shows that a task is completed.) of the task.
• To schedule the task only according to the task calendar, select the task, click Task Information , and then click the Advanced tab. Select the Scheduling ignores resource calendars check box.

Microsoft Office Project 2003 automatically creates a resource calendar (resource calendar: A calendar that specifies working and nonworking time for an individual resource. A resource calendar differs from a base calendar, which specifies working and nonworking time for more than one resource.) (based on the Standard calendar) for each resource (resources: The people, equipment, and material that are used to complete tasks in a project.). If you create a new base calendar (base calendar: A calendar that can be used as a project and task calendar that specifies default working and nonworking time for a set of resources. Differs from a resource calendar, which specifies working and nonworking time for an individual resource.) for a resource and modify working time (working time: Hours designated in a resource or project calendar during which work can occur.) in the new base calendar, but don't base the default resource calendar on the new base calendar, it will look as though the calendar (calendar: The scheduling mechanism that determines working time for resources and tasks. Project uses four types of calendars: the base calendar, project calendar, resource calendar, and task calendar.) settings you entered were ignored.

Note  To make resource calendar changes to an enterprise resource (enterprise resources: Resources that are part of an organization's entire list of resources. Enterprise resources can be shared across projects.), you must first check out the resource. Learn how to edit information for an enterprise resource.

• To replace the resource calendar you created with the default resource calendar (the Standard calendar), on the View menu, click Resource Sheet. Click the resource name, and in the Base Calendar field, click Standard. The resource is now scheduled using the Standard calendar instead of the one you created for it. Click Resource Information , click the Working Time tab, and reenter the nonworking days and times you entered for the other calendar.
• To synchronize multiple calendars to a resource's base calendar (which you created in the Change Working Time dialog box) without replacing the calendars, on the View menu, click Resource Sheet. Click the resource name, click Resource Information , and then click the Working Time tab. In the Base calendar box, click the name of the resource calendar you created and modified. The settings of this resource calendar are set for the default resource calendar when you use it as the base calendar.

  If you need to make further changes to this resource's working time or nonworking time (nonworking time: Hours or days designated in a resource or project calendar when Project should not schedule tasks because work is not done. Nonworking time can include lunch breaks, weekends, and holidays, for example.), you can do it in either calendar, because the base calendar updates the resource calendar. If you need to use the base calendar for another resource, enter updated information there. Further changes you make to the default resource calendar will not show up in the base calendar.