There are no such road maps to be remembered of. As you pass BCA you will have to attempt for MCA entrance examination and on qualifying you will get the seat. There can be multiple number of exams and some institute specific examination which can be only specified on the base of your state.

If you are in a private university then you may get a direct chance to get a seat of MCA in your university.

Some of the famous MCA examinations are:

• MAH MCA CET
• NIMCET
• BIT MCA
• JNU MCA
• DU MCA
• WB JECA
• CG PRE MCA

To know more about this exams you should visit the link provided below:

https://it.careers360.com/articles/top-7-mca-entrance-exams-in-india

I hope this answer helps. All the very best for your future endeavors!