Do you mean the Cravings Diary Humble?
If so, here are some instructions taken from the FAQ page. Most questions about the program tools are answered there.
"Once logged in to the program you will automatically be taken to the Program main page. Click on Cravings Diary on the menu within this page. Here you can select a date and record your level of craving, NRT used and observations. You can review your entries at a later date and graph your progress!"
If you have any other questions please fee free to ask.
Ashley, Health Educator