Do I need to separately fill KJ Somaiya's form if I'm targeting it through the MAHCET and CMAT?

There are two courses available in management studies 

1. PGDM (fully autonomous) 
2. MMS (autonomous affiliated to Mumbai university)

The PGDM course requires a separate form to be filled out if you are applying through CAT/CMAT/XAT or other All India Entrance exams. PGDM course doesn't have any kind of reservation criteria but you need only an All India Level Entrance exam score to apply.

The MMS course does not require you to fill out a separate form for applying through MHT-CET/CMAT/CAT because they are under DTE. One thing that you need to know is that this course is a Gujarati linguistic minority course where

• 51% of seats are reserved for Gujarati Speaking students 
• 49 % don't have any caste-based quota,
• Out of the total intake in MMS 15% is reserved for All India Entrance exams like CAT, XAT, etc.