Yeah, about as much.
v=3=v
Do understand the purpose of why a) They move together, and B ) They have to write down their moves and then show hand.
This is from an age before fast, long-range communication.In a real medieval battles, when you make an order, you have to send runners down to each individual columns, and if they have anything they have to send someone back. There will always be delays. The best you can do then, would be to say something like "Hold until the 3rd hornblow and charge".
Once it gets movin', it gets MOVIN'.
And they have no planes areial drones either, so half the time they'll have no idea what the armies are actually doing right this moment until their runners come back.
That sort of things lasted up till WWII, and even in Vietnam and Koreas they still hadn't got it completely right.
(Yeah, "Modern War" is just absolutely f__king insane compare to those)
So, you use the show hand method of making commands, that's simulating both a part of that, and also to prevent "cheating" as its pretty hard to not give any single side an advantage of knowledge if you have an initiative. (The Move/Countermove side of ruleswould be an example of that: Unless your first moves can hit with overwhelming force right off the bat, the 2nd mover would always have the advantage of "knowing", like in a fight if you know the other guy's gonna jab your nose you'd get a world of options to stop that... Unless the other guy's Ali or Bruce.

)
BUT, using Initiatives MAKES EVERYTHING RUN SO MUCH BETTER. Hence why D&D didn't have Simultaneous. (And that goes with the square/hex map too. Much easier than swinging a ruler for 5 minutes in every turn.)
Anyhow,
1.這個指令下達后,是告訴第三方主持人么,然後主持人是怎麼樣具體的擺放這些模型呢。總得一個個擺在什麼位置上吧,
It's a showhand. Just show the other guy. Wargames don't usually need a neutral judge (unless you're playing with an @hole, of which the question would then be "why are you playing with an @hole?" =w= )
As for how you'd place them? Just how you like to. v=3=v.
It depends on how the people involved talked between themselves really. Usually, on the map you'd have one area where you put your units, and another area where they do their thing.
Some people cover their area with cardboards to hide it until they start playing. Some people don't.
One of the things that make Wargames different from chess, is that you don't really have a set board or position. The map is how you make it. (And the pieces are "how big your bank is" before we had 3D printing.

)