The act of being so much of a boss, that it must be admired. Displaying how much of a boss you are is an act of bossmanship.
Milk: Look at him ramming that guys head through a glass door, that was awesome.
Mayo: He definitely displayed some bossmanship there.
Milk: Evidently so.
The act of being bossy.
Renee acted in good bossmanship when she told Bobby he could complete Orange Township at his fucking leisure.