Set up a gradebook with a sub category 2 items in the sub category (leave defaults) 2 items in the top category (leave defaults) Set all categories to use 'Natural weighting' All the weights should have been set automatically Notice the sub category max grade is 200, and both items are weighted as 50 Tick the extra credit checkbox of one of the items in the sub category Click "Save changes" Confirm that the category max grade is 100 Confirm that the category weight is equal to other items in the parent category