Editing attribute point increases

[ntfoster]

Our DM has very generously changed the usual +1 attribute point at Level 4 to a +2 (as +1 is pretty underwhelming when you've used a point buy and your stats are at even numbers).

Is it possible to change the attribute point increase with the editor, or is this something that's too baked into the rules to be able to change? I've had a good look through the editor, and couldn't see anything that would let me change this.

I know I can just add in the extra point and ignore the error Hero Lab throws up, but I'd love to be able to do it cleanly if possible.