Enter activity constraints

Choose Project, Activities, then select the activity whose constraint you want to define.
Display Activity Details, then click the Status tab.
In the Primary field, select a constraint type.
Click in the Date field, then select the date to which the constraint applies.
In the Secondary field, select a constraint type (if necessary).
Click in the Date field, then select the date to which the constraint applies.
Note:
- The Secondary constraint list is filtered based on the value you select in the Primary constraint field.
- You cannot apply constraints to Level of Effort or WBS Summary activity types.