How can I set task completion event for a deliverable?

When you add deliverables to a task, gate, or milestone, the deliverables are displayed in the Deliverables tab of the Task Details dialog box by default.

To set the task completion event:
  1. On the Manage Project Plan page, right-click the task, gate, or milestone, and select Manage Work Items.
  2. In the Manage Work Items dialog box, set the task completion event for the deliverable.