Game management?

[Sharpshooternes]

Game management to me means:
knowing the rules, but also knowing when to enforce them.
Knowing when to talk, knowing when to listen, and knowing when to take care of business.
Having clock and situational awareness.
Anticipating different coaching strategies, so you can know what a coach or team will do before they actually do it.
Crew communication, both verbal and nonverbal.
Trust your partner to get the right calls, in the right area.
Being Trustworthy so your partner(s) can do the same.
Then knowing when to reach and get that crew saving call.
Be patient on the whistle, and see the development middle and end of a play.
Eye contact.
Crisp Mechanics.
Look the part
And most importantly:

DFIU!!