I tell my guy to attack more than 1 person at a time but he only attacks..

You can only atack multiple guys with magic.... Or heal your party

It is impossible to attack more than one person but you can attack them more than one time my dude can attack up to 12 times on one person

If your problem is with te magic spells read what it says when you try to attack all the monsters if it says group it will only attack monsters of te same one asthe one the crusor is on if it says all it will attack all monsters on the field. Or sometimes you might be useing a ground attack (for example:quake) it will not effect flying monsters

If I'm right your using a spellcaster:

The problem is there are different monsters your problem is you might be grouping what you want to do is target all so on the control pad press (<---)