CS New syllabus exemption

Hi Sir/Madam,

I have registered for CS executive and planning to give my first attempt in December 2019. Can somebody pls explain how exemption works? how much should i score in a subject to claim exemption in the next attempt. Suppose im writing only Module 1 in 1st attempt, how much should i score to get exemption for all 4 subjects so that in June 2020 I can write only Module 2?

I dont have any CS friends. Hence, your guidance on this is hugely appreciated, thanks in advance.

Kind Regards,
Karthik