You are the program manager for your organization. You are examining the order of the activities in your program schedule and would like to change some of the ordering to alleviate scheduling…

Mandatory dependencies, also called hard logic, are inherent to the work itself and cannot be reordered regardless of preference or resource availability. They are dictated by physical, legal, or contractual constraints - for example, a foundation must be poured before walls are built. These cannot be changed by the program manager without fundamentally altering the nature of the work.

Finish-on constraints are scheduling constraints that fix an activity to end by a specific date, not a dependency type describing ordering relationships between activities.

Benefits management dependencies is not a recognized term in program or project scheduling methodology.

Discretionary dependencies, also called soft logic or preferred logic, are based on best practices or preferences and CAN be reordered - they are the opposite of what the question describes.