Note: The editing of the macros is a Premium function
Go to Settings by tapping on Me on the bottom tab bar on your Diary page and click on the round gear symbol to the left at the beginning of the page. Your Settings are here. Then scroll down to Nutrition Settings.
Tap on Change Values. Adjust nutrition settings per wish either by moving the slider or clicking on "-" and "+" left and right to the slide and tap on Save when you're done.
The macros for the keto diets are freely adjustable 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 either offering 20, 50 or 100 grams of carbs (Ketogenic Easy, Ketogenic Medium, Ketogenic Strict) - but you are able to manually change fat and protein.