The following video illustrates using brute force to make the plan comply with reality.
Plans aren't always right.
A project activity is moved from one capacity to another, which by itself is an overruling. Further the activity is squeezed down into a smaller space.
Multi Project Planner will prevent you from doing so, unless you press the "Ctrl" button.
This is the meaning behind the phrase brute force, ie you take control and tell Multi Project Planner what the world looks like.