How can I make a function run on multiple objects simultaneously when it contains a loop?

I have a script that has been troubling me for some time. Whenever NPCs spawn, they're supposed to get a checkpoint and move to that position. However, my script uses pathfinding. If it were simply a matter of using the MoveTo function once, it would be no problem. Here is my script:

wait(1)
npcs = game.Workspace.ActiveNPCs:GetChildren()
checkpoints = {Vector3.new(-99.2998886, 30.2999496, -91.5046234),
Vector3.new(-22.3003178, 30.2999496, -100.502426),
Vector3.new(47.6997795, 30.2999496, -100.501404),
Vector3.new(-18.2993164, 30.2999496, -48.5024147),
Vector3.new(-17.2979679, 30.3000755, 41.4907074),
Vector3.new(59.7020416, 30.3003025, 107.491859),
Vector3.new(60.7024612, 30.299818, 35.4920883),
Vector3.new(59.7007599, 30.2999249, -33.5009384),
Vector3.new(-19.2975655, 30.2995892, 115.490532),
Vector3.new(-118.297119, 30.2998695, 111.488739),
Vector3.new(-104.297592, 30.3003025, 29.4886169),
Vector3.new(-111.298828, 30.2999249, -19.5043755),
}

--[[local ray = Ray.new(nonPlayerChar.Torso.Position, nonPlayerChar.Torso.CFrame.lookVector*2)
local hit, position = game.Workspace:FindPartOnRay(ray, nonPlayerChar)
local distance1 = (position - nonPlayerChar.Torso.Position).magnitude--]]

wait(1)
function moveNPCs(v)
	local checkpoint = checkpoints[math.random(1, #checkpoints)]
	print(v.Name .. " will move to " .. tostring(checkpoint))
	local path = game:GetService("PathfindingService"):ComputeRawPathAsync(v.Torso.Position, checkpoint, 100)
	print(path.Status)
	local points = path:GetPointCoordinates()
	for _, point in pairs(points) do
		v.Humanoid:MoveTo(point)
		repeat
			local distance = (point - v.Torso.Position).magnitude
			if v.Humanoid.Sit == true then
				v.Humanoid.Jump = true
			end
			if point.Y >= v.Torso.Position.Y + 1.5 then
				v.Humanoid.Jump = true
			end
			local ray = Ray.new(v.Torso.Position, v.Torso.CFrame.lookVector*2)
			local hit, position = game.Workspace:FindPartOnRay(ray, v)
			local distance1 = (position - v.Torso.Position).magnitude
			if hit ~= nil then
				v.Humanoid.Jump = true
			end
		print(v.Name)
		wait()
		until distance < 3
	end
	wait()
	print("test")
end

game.Workspace.ActiveNPCs.ChildAdded:connect(moveNPCs)

for _, npc in pairs(npcs) do
	moveNPCs(npc)
end

The event causes each NPC to move at the same time, but their movements do not seem correct. The generic for loop generates the desired result from individual NPCs, however the NPCs do not move simultaneously. What can I do to make the function run on all NPCs at the same time, or at least make them move at the same time? Please, shed some light on me! Thanks in advance.

Linked scripts might help with this possibly.

Another option I see is to set the function to each NPC but have it wait for something to fire or change to tell them to start. Basically you need it to wait till all the NPCs are ready before you tell them to do the desired action. Coroutines could possibly do this and have them wait for a value to change before letting it continue with the for loop on each of them. Your main goal here in terms of setting up your codes logic is making sure they are all prepared with the instructions the code provides to each before having it fire. Don't know if that made much sense or helped but hopefully it did.