The whole crew will go out onto the field at minus 60 min. What brought this about?
What do 7 guys do for the hour?
You asked.
#1: Everybody maintains vigilance on the teams to make sure they don't interact in any improper way. If you do nothing else productive - you do this.
Everything else is secondary.
All: If you have replay - enter field together and stay together for RO to test pagers, then disperse.
Both wings: Get snap reps, working on pre-snap routine, keys, movement, progress, etc.
All deep guys:
Observe punts for wind effects, and get some reps looking at returns (short as they may be). Record numbers & kicking legs of punters & place kickers. Practice fades during passing drills, working on pre-snap routine, identifying keys, and focusing on catch observation technique (i.e., feet then ball). Alternate teams.
B: Check play clocks (locations & operation). Make sure pylons are in correct locations. Talk to punt receivers about fair catch signals.
F: Assemble ball persons (with S) and give them instructions. Find your get back coach and thank him for his help.
S: Walk field (with R, if he wants), and check for unsafe conditions, and check field markings (particularly 9-yard marks). Check game clock(s) (locations & operation). Find your get back coach and thank him for his help. Join F for ball-person instructions. Instruct foul recorder.
H: Instruct chain crew. Thoroughly. Collect S and greet head coach on your side.
L: Coordinate with media liaison, replay sideline assistant, etc. Collect F and greet head coach on your sideline.
U: Check equipment, talk to line coaches and get punt/field goal lineups. U is most difficult position to work on pre-snap routine - but do what you can.
R: Immediately after pagers are tested, go to replay sideline assistant and check headset and give assistant instructions. Do this with the other official that will always go with you to the headset when there is a review (L or F, usually). Re-check field for safety and operational issues. Get starting QB numbers, names, and throwing arms - greet each. Get reps looking at passer drop backs, keeping focus on passer, etc.
When both teams are fully on field - keep them separated (45-45 "neutral zone"). All keep an eye on players near mid-field and keep them separated. When teams depart field, keep them separated. Many times, this takes a full crew to be effective.
Much more. Keep busy. Don't stay in the same place more than a minute or so. Don't stand with hands in pockets, arms crossed on chest, or hands on hips.
Try it. You'll like it. Well, now you have to do it, even if you don't like it.