We use your profile information (gender, age, height/weight, activity level) combined with your desired calorie deficit percentage to calculate your calorie goal.
You probably calculated a calorie goal when you first signed up and went through the Getting Started Wizard.
If you didn't, you can go to Settings > Getting Started and follow the instructions.
If you'd like to recalculate your calorie goal, first check your profile because Carb Manager uses that information to calculate your calorie and macros goals.
To view profile info (gender, age, height/weight, activity level), select Settings from the main (left) navigation menu, then select the My Profile tab and make any desired changes.
To change your desired calorie deficit percentage, select the Macros tab from within that same Settings area, and select a new deficit percentage, which will automatically generate a weight loss goal and a calorie goal. You can also type in a specific calorie goal.
When you're finished changing your calorie and monthly weight goal, scroll down and select Apply My Macros.
If you do plan to track calories on your Daily Log, please also be sure that you've enabled calorie tracking.