Changing continental squad registration rules

[rmcf2017]

Hello, this might be an easy question for the experiences folks in this thread. But i am not an experienced person, far from it. 

 

I am currently trying to create an Indian league system DB, where I am adding changed rules for foreign players limits. However, the continental cups have this very annoying rules where you can have 3+1 foreigners max in the squad. That is 4 total foreigners with 3 non Asian allowed. I want to change this to something closer to the homegrown system used in Europe or even remove this rule all together. 

 

Can some guide me or point me towards a thread that can help me make the necessary changes in the competitions.