quick tools - adding calories burned during exercise

You know how you can add calories under quick tools when you already know how many calories you ate and don't want to look up specific foods? Does anyone know a way to just add the amount of calories burned during an exercise without having to pick an exercise? I just go by my heart rate monitor. If they don't have that option on myfitnesspal they should. thoughts?

Have a great eating and working out day! You're one workout away from feeling great.