Working with Schedule Dependencies
While building your project schedule and associated levels, you can set up relationships between the phase, task, and labor code work breakdown structure (WBS) elements. These relationships are called dependencies.
Video: See related video below
- Quickly understand project schedule and relationships by viewing the Gantt chart without having to read through dates.
- Efficiently update the project schedule when dates change on a project, since all of the impacted successor dates will automatically update as well (not just the parent/child relationships).
- Track your project's critical path and overall schedule and identify potential schedule risks.
- Understand which dates can change without impacting the project completion date.
Schedule Tab of Project Planning
Use the Schedule tab of
to set up dependencies between WBS elements. This tab provides an interactive Gantt chart that displays a timeline for each level on your project plan's WBS. This provides a quick way to work with the project schedule, levels, relationships between the levels, and critical path.For an overview of how to use the Schedule tab of the Plan form, see Creating Dependency Relationships Quick Reference.
- Drag the arrows between bars on the Gantt chart.
- Use the Dependency Details dialog box. To display this dialog box, either double-click a bar or click on the row tools () for the level and select Dependency Details.
- Type the predecessor details in the Predecessor column.
See Create Dependency Relationships for more details on how to use each method.
When you create a dependency, an arrow from the predecessor to the successor displays. If you change the dates for a predecessor, all successor dates change accordingly. Any updates you make on the Schedule tab automatically update the corresponding information on the Labor, Expenses, Consultants, and Units tabs.
Dependency Indicators on Other Project Planning Tabs
After schedule dependencies are created on the Schedule tab, the Labor, Expenses, Consultants, and Units tabs of Project Planning and Resource Management applications display a in the Has Successor or Has Predecessor columns on the row to indicate that the WBS element has a dependent relationship.
Video
Title | Description |
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This video shows you the different methods for creating schedule dependencies on the Schedule tab of Project Planning. These methods allow you to identify predecessors and successors, select relationship types, and add lag/lead time for dependencies. |
- Related Topics:
- Creating Dependency Relationships Quick Reference
This quick reference shows how to create dependency relationships between work breakdown structure (WBS) elements on a project plan. - How Dependencies Work Across Different Levels
This quick reference provides an overview of how dependency relationships can be structured within a project. - Types of Dependency Relationships
You can create various types of dependency relationships from selected levels in your project. - How Lead and Lag Time Work with Dependency Relationships
You can use lag or lead time to enforce a delay (lag) or an overlap (lead) between dependency relationships. - How Float Time Works with Dependency Relationships
Another schedule concept that comes into play with relationships is float. - Redistributing Planned Hours when Schedule Dependencies Exist
When making any changes to a plan, including redistributing hours, you should expect that all dependencies are honored along with any options you specified on the Redistribute Hours dialog box. However, you could make selections in the Redistribute Hours dialog box that, when applied, would cause prohibited dates based on an existing dependency with a predecessor and result in broken dependencies.