It's an option just below the script name in a given scripts UI. I always wondered about the alias option, but wasn't adventurous enough to experiment with it. When using an alias, does one just use that name to call a script in a script? For example, if ihave 2 scripts and 1 calls on the other, would this work?
Script 1 is example script blah/1
Script 2 is blah/2 alias; 2
Haspermission [admin] [true]
Text [local] [nope] [0,0,0]