Please let us create and save new sets of custom macros

In the macros menu of the settings, there is a way for us to set custom percentage of macros. What if I want two or more sets of "custom %" to be used on different situations.

For example, I want to create a setting named "My weekend diet" with 10% carb, 15% protein and 75% Fat for Saturday and Sunday, then create another setting named "My weekday diet" with 30% carb, 15% protein and 55% Fat for weekdays.

After creating  the two settings, I just need to "load setting" whenever I want to switch my plan.