About Task Dependency Relationships

In Project Task Gantt you can create a task dependency relationshipA relationship between two tasks. If a task is completed early or late, this has an effect on the start and end date of the task that succeeds it. between two tasks with one of these dependency types:

• Finish to Start (FS)A type of dependency relationship between two project tasks. When a finish to start dependency relationship exists between two project tasks, the second project task in the relationship cannot start until the first project task is complete..
• Start to Finish (SF)A type of dependency relationship between two project tasks. When a start to finish dependency relationship exists between two project tasks, the second project task in the relationship cannot finish before the first project task starts..
• Start to Start (SS)A type of dependency relationship between two project tasks. When a start to start dependency relationship exists between two project tasks, the second project task in the relationship cannot start until the first project task starts..
• Finish to Finish (FF)A type of dependency relationship between two project tasks. When a finish to finish dependency relationship exists between two project tasks, the second project task in the relationship cannot finish until the first project task is complete..

You can also specify a lagWhen a depenency relationship between project tasks exists, this term refers to the time gap added at the end of a task before the succeeding task can start. The default lag is 0. time on a task dependency relationship.

Note

When you create a task dependency relationship in Project Task Gantt, the default lagWhen a depenency relationship between project tasks exists, this term refers to the time gap added at the end of a task before the succeeding task can start. The default lag is 0. time of 0 is applied. When you change the dates of a dependent task, for example by dragging the task bar on the Schedule pane, the dates on the preceding task are not updated in accordance with the dependency rules.

To re-apply dependency rules:

• Select the tasks to which you want to re-apply rules and click Apply Rules.
• Right-click a task and select Apply Dependency Rules.

When you save changes dependency rules are not re-applied.

You cannot create a dependency relationship between a parent task and any other task.

Depending upon the configuration options your administrator has set, the Apply Rules button becomes available when dependency rules need to be re-applied.

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