Project.LevelEntireProject Property (Project)
True if all resources in the project are leveled. False if only overallocated resources within specified dates are leveled. Read/write Boolean.
expression A variable that represents a Project object.
You can also set the LevelEntireProject property in the Resource Leveling dialog box. To access the setting, click Leveling Options on the Resource tab of the Ribbon, and then click Level entire project.