Hello I'm quite new here and I'm trying to build a campaign for some friends, while testing out the mechanics I found something that I can't seem to fix. When rolling dice if the die lands on the highest number ie. a 20 on a d20 the engine rolls a second die and adds it to the total. It does this for all dice, I was tried rolling up a character using the 4d6 option and two of them were sixes so it rolled 6 dice. Is there a way to fix it so it? Are there settings for what happens when you crit?