From book Project Management The Managerial Process 6ed. Appendix 2 Page 643 Part 2
Which if any of the resources are over allocated?
Assume that the project is time constrained and try to resolve any over allocation problems by leveling within slack. What happens?
What is the impact of leveling within slack on the sensitivity of the network?
Assume the project resource constrained and resolve any over allocation problems by leveling outside of slack. What happens?