Soni -- Yes, there is an area in the application in which you check a box for the program you are applying to.
As for why there is no separate MMM question, I don't have a clue. Perhaps its because the MMM question really is not all that different from the 'Why Kellogg?' question.
Compare the two questions:
A.) Briefly assess your career progress to date. Elaborate on your future career plans and your motivation for pursuing a graduate degree at Kellogg
and
B.) Briefly assess your career progress to date. How does the MMM program meet your educational needs and career goals? (one to two pages double spaced).They are very similar to me. Make sure when you explain why Kellogg, you talk about how the MMM fits with your educational/personal/professional aspirations. For MMM applicants, in the question asked, I would interpret '...pursuing a graduate degree at Kellogg' to mean 'pursuing the MMM program at Kellogg.'