When creating a character, instead of rolling for your stats, click on the Basic button. Then, click to increase a stat until it reaches 18. Click and hold that number and drag it to the right side of the stat arrows. It will disappear. Click on the Advanced button now and you will find that the 18 is now in one of the squares. Return to the Basic and repeat the process until all the squares have 18 in them. Remember to put the 18's to the right side of different stat arrows.