Assign a Prerequisite to a Task
- Open the Process Manager.
- Expand the Process Set, Process, and Sub Process to view the individual Tasks.
- Select a Task.
The Task Context view appears on the right.
- Right-click on the Task and select Add/ Remove Prerequisites (or click Add/ Remove Prerequisites in the context view).
The Add/ Remove Prerequisites dialog appears. 
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- Select a Prerequisite Task from the Unassigned Tasks box, and click >>.
- Click OK.
The Prerequisite Task appears in the Prerequisites box in the Task Context View.