Changing the category of FB app

I am currently learning to develop fb apps. When initially creating the app I didn't select the app to be of 'Game' category and now when trying to add achievements it requires the app to be of game category. It says here:

"This API is only available to applications categorized as games. You can categorize your app as a game the Developer app by navigating to About --> Basic Info and selecting Games in the drop-down menu in the category field."

But I couldn't find the About-->Basic Info in my app's developer page. Please suggest a way to change the category of my app.