Note: The editing of the macros is a Premium function
Go to your Profile by tapping on the Profile icon in the top right corner of the Diary or Progress tab. Click on adjust macronutrients.
Tap on Change Values. Adjust nutrition settings to your preference either by moving the slider or clicking on "-" and "+" left and right to the slide and tap on Save when you're done. Note that the sum of the macros has to add up to 100% of your calorie goal, it cannot be more or less than that.
The fat and protein for the keto diets can be adjusted to your preference except for the carbs. The percentage for the carbs is locked as we otherwise do not have any technical solution to allot matching recipes.
You can choose between three plans offering 20, 50 or 100 grams of carbs (Ketogenic Easy, Ketogenic Medium, Ketogenic Strict). But, you can change the fat and protein amount on all of these plans.