if u plan on using that sqs in ur mission, then u need to put that sqs into ur current under construction mission folder.....
user/missions/nameofurmissionfolder
then with many different ways, u call upon that script...
most easiest would be to use a trigger with whatever condition and when it trips it would execute the script
[] exec "nameofscript.sqs" ...... in [] you would pass on variables(names and other things) to the script that are in the script....[logic1,unit1] exec "thescript.sqs"........ for example...i remember getting a script for a parachute drop,it called on the name of my leader(s1) and the helo name(h2), so i did [h2, s1] exec "paradrop.sqs" when it hit a trigger.
hope tht clears thing up a bit