You can now use this app!! instead of fixing this like in the tutorial the app will do it for you
http://forums.remnantmods.com/viewtopic.php?f=10&t=1320
Some of you may know that if we work per example on a map that has let's say 3 mach spawns(from the original map) and that if we want to add more machine spawns, we can, clone chunks with entity, and we will have more chunks as well.
I'll take this tutorial as example of DrXThirst :
http://forums.halomods.com/viewtopic.php?t=63449
Which is a good tutorial, but even if it's says working on systemlink, it doesn't when we can to clone chunks, there it works because he copied existing chunks from another(original) map.
But, if you clone a placement chunk once you have all those new spawns, when you play on systemlink those new machine will only spawn for the Party Leader(Hoster).
What we need:
#I will be using Entity 1.6UE
#Ascension.map
#This scnr plugin(you cannot clone chunks on scnr with this plugin): http://trashalo.hostgratos.net/scnr.ent
So how do we fix that?
(These example can be applied to bloc, scen, mach,ctrl spawns)
Clonning placement chunks
Got scnr and open the chunk cloner, don't use the plugin i just gave you to clone chunks, it doesn't work, we will need this plugin later for meta editing.
Ok, so for this exmaple i'll show you some cloned blox spawns, i used Ascension.map, i cloned the bloc placement chunk 3 times and Add meta to map.

So you should get this:

Fixing the cloned placement chunks
Go to the scnr and META EDITOR and find "Crate Placement" reflexive.(which is bloc placement in fact...)
What makes that in system link the new cloned placement chunks doesn't spawn is the fact that thhis values:
-Origin BSP Index
-Source
-BSP Policy

Are the same for each clone chunk.
So these values must be different and unique for each chunk.
Example to fix these 4 placement chunks:
#Chunk0:
-Origin BSP Index:512
-Source:32
-BSP Policy:7
#Chunk1:
-Origin BSP Index:513
-Source:33
-BSP Policy:8
#Chunk2:
-Origin BSP Index:514
-Source:34
-BSP Policy:9
#Chunk2:
-Origin BSP Index:515
-Source:35
-BSP Policy:10
Understood?
Now you can add as much chunks as you want(but there may be a limit on multiplayer, not sure,test!) and all your new spawns will work on system link!
Feel free to ask any question!
-neodos