Clean and simple? No such thing in OFP editing. There's only
cleaner and
simpler. So I'm going to give you the slightly less ugly and slightly easier version, although rest assured there are others.
1) the command is
join and works like so: [unit1, unit2, unit3, unit4]
join unit5. Just change the unit1/unit5 to the names for the five units you have and you've got it. As to when the command should be exectuted...well, that's another question all together.
2) You mean naming one? Groupname = group SomeUnit. Groupname will be the group's name (not the Alpha Black thing, but the stuff the editor understands) and SomeUnit is any unit who is in the group you want to specify. Say for instance
Wgroup1= group aP.
3) by using the method lined out in answer #1. Just make sure they're joining aP, and not the other way around. I'm not sure about this, but since it's logical you should make sure aP is also of higher rank than the people who join him. But I suspect it's possible to have people of higher ranks flock around you too.
Hope these helped, if anything's unclear, just ask away. G'luck :thumbsup:
Wolfrug out.