If you have the required privilege, you can use Activity Relationship Details to
- add predecessor and successor activities
Click the appropriate Assign link. Select an activity and click Assign. To quickly find an activity, you can search based on the data field you select. You can assign multiple predecessors or successors, one at a time. When finished adding relationships, click Close.
- revise or remove a relationship
Click the predecessor or successor activity name. Edit the relationship and click Save. Or, click Delete Relationship.
You can also add and edit activity relationships in the Activity Table and Gantt chart that appear on the Projects > Activities page. For more information, see Add, edit, or delete activity relationships.
Field Definitions
- Project ID
- The unique identifier for the project to which the predecessor or successor activity belongs. If not the ID of the project with which you are working, the activity you selected in the hierarchy has an external relationship. An external relationship represents a dependency between activities that belong to different projects.
- Activity Name
- Name of the activity that is a predecessor or successor to the selected activity.
- Relationship Type
- Identifies the type of dependency that exists between the
selected activity and its predecessor or successor:
Finish to Start - The successor activity cannot start until its predecessor finishes
Finish to Finish - The successor activity cannot finish until its predecessor finishes
Start to Start - The successor activity cannot start until its predecessor starts
Start to Finish - The successor activity cannot finish until its predecessor starts - Lag
- The delay between the start or finish of one activity
and the start or finish of another. If the selected activity has a finish-start
successor with a 3-day lag, the successor activity cannot start until
three days after the selected activity has finished.
Lag can be positive or negative. Using the previous example with a lag of 3, the successor activity could start three days before the selected activity finishes. Negative lag is also called lead.