I can barely understand you at all. I'm guessing you don't speak English good?
For your first question, do you mean there stats as in attack, defense, etc.? If so then you can just change it in the actors section of the database.
And to make a weapon 2-Handed or high critical rate in VX, just check the box next to the option. I'm assuming your talking about VX, but you should be specific. It wouldn't matter for your first question though.