Hello to fill form of BBA you just need to visit this link( https://cdn.digialm.com//EForms/configuredHtml/1258/64709/Instruction.html )

agree to terms and conditions then proceed to the next page.

On the next page you need to fill out your details and the program you want to choose.You can also apply for multiple exams. Keep the password safe with you you will need it later.

Next you will have to login with your given details and pay for the CET exam for your program.

Hope it helps