What is IPCC merit criteria??

Hello to all..

Firstly, I wanted to ask that can a person get merit in IPCC by giving only Group 1 of IPCC??

Will the person be counted in merit list if he/she gets the required marks for merit in Group 1?? Or is it necessary to give both groups for getting into merit??

Secondly, I had opted for both groups but I am scared in Paper 5: Advanced Accounting. As I also did not take any coaching, so I do not have much knowledge on that subject. So I now plan to give only Group 1 of IPCC. Will my not giving Group 2 count as a failed attempt as in my exam form too I had opted for both the groups.

Kindly help..