Defining a milestone for a task
You can set a milestone for a task to ensure that task is complete before the workflow proceeds.
1.
Open the project, then open the Workflow tab.
2.
Click Edit to make the workflow spreadsheet editable.
3.
In the Milestone Type column, in the task row for which you want to set a milestone, select a milestone from the drop-down list.
4.
Click Save or Save and Finish to save the milestone you set.
The milestone is now in effect for the project.