Deltek Open Plan Help

Using the Help Search
Using the Help Search
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Add Relationship Dialog Box

Relationship information defines the logical relationship between activities in your project.

When in the Relationship Spreadsheet view, you can enter relationships by double-clicking the selection button of an empty row.

The Add Relationship dialog box allows you to create a relationship between activities using the following settings:

  • Predecessor: The ID of the activity that logically precedes the relationship.
  • Successor: The ID of the activity that logically succeeds the relationship.
  • Type: There are four types of relationships: finish-to-start, finish-to-finish, start-to-start, and start-to-finish. The default for the relationship type is finish-to-start.
  • Lag: The time delay associated with the relationship. Lag can be either positive or negative. Negative lag is sometimes called "lead." The default for the relationship lag is zero. If you enter a numeric value without a unit identifier, Open Plan assumes the default units specified for the project. If, on a start-to-start relationship, you enter a numeric value followed by %, Open Plan assumes the value to be a percentage of the predecessor's duration.
  • Calendar: The calendar upon which Open Plan bases calculations for any lag in the relationship. If you do not enter a calendar, Open Plan uses the default relationship calendar.

You can use a finish-to-start relationship with negative lag to model a start-to-start relationship. This has the advantage of keeping the predecessor and successor activities in parallel even if work on the predecessor activity is halted for some reason.

Note: You can also create a relationship between activities using the Link/Unlink dialog box.



In addition, you can add, edit, and delete data for predecessors and successors directly in a cell of any activity-based spreadsheets. The Activity Predecessors and Activity Successors columns display the predecessor/successor ID, relationship type, and lag of the relationship (which is optional and may be negative) in each cell using the format <Predecessor/Successor ID><space><relationship type><+/-Lag>. For example, 1.02 SF+3d.

Related Topics

Related Procedures