Can I set a specific number of grams of carbohydrate to track each day?

In the app

Tap the blue menu button to the right of the search bar in your diary, select Nutrient Goals > Set My Own Goal. Enter your preferred target, scroll down and tap Apply Changes.

On the website

Click on the Settings link above your diary > Set a nutrient goal > Set My Own Goal. Click on the Carbs grams to override it with your own figure, press Apply changes to save your targets.