As you all know, if you can Spawn NPC’s as you need them, it saves the processing of them until
required, and might give you a few extra frames per second in speed.

This little piece of code allows you to set a ‘TRIGGER ZONE’ that Spawns as many NPC’s as you
want at the one time, as the Player steps onto the Trigger Zone.
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-- LUA Script - precede every function and global member with lowercase name of script + '_main'
-- Player Enters Win Zone
function spawn_npcs_1_init(e)
end

function spawn_npcs_1_main(e)
if g_Entity[e]['plrinzone']==1 then
PlaySound(e,0)

Spawn(136) -- ID Number of NPC - Found by placing mouse pointer
over NPC, and reading first Number in Bottom Editor Bar.

Spawn(58) -- Next NPC ID Number
Spawn(123) -- Next NPC ID Number
Spawn(119) -- Next NPC ID Number
Spawn(13) -- Next NPC ID Number
Spawn(94) -- Next NPC ID Number
Spawn(124) -- Next NPC ID Number
Spawn(66) -- Next NPC ID Number
Spawn(11) -- Next NPC ID Number
Spawn(148) -- Next NPC ID Number
Spawn(98) -- Next NPC ID Number

Destroy(e)
end
end

PLACE IN 'MAIN' IN TRIGGER ZONE

Fixed lua file edited original post.

you can already do it with the 'ifused' field and the entity names, dont need to open the script then