Macronutrient percentages can be customized in the second tab of the app. To do so:
- Open the distributions page (the second tab of the app)
- Tap on “Edit macronutrients distribution“
- Tap the current percentage values to edit them
- Once you have set the desired percentages, tap “Save” to apply the changes
Note that this change will only affect the currently selected distribution, Plus users can create multiple macronutrients distribution so you will have to first select the proper distribution that you want to customize.