To view different construction situations, you can assign a Construction Type to the elements in a model. As the schedule simulation plays, the display of the objects changes according to the Construction Type and their related schedule start and end dates. By default, all tasks are considered to be Constructive.

• Constructive — Elements are invisible at the start of the project. At the start of the task to which they belong, the elements display in the selected color. After the task is run, they continue to display in the default color until the end of the project.
• Destructive — Elements are visible at the start of the project. During the task to which they belong, the elements display in the selected color. After the task is complete, the elements become invisible.
• Permanent — Elements are visible in the default color at the start of the project. While the task to which they belong is run, the elements display in the selected color. After the task is complete, elements return to the default color.
• Temporary — Elements are visible only while the task to which they belong is run.