Regarding: What are the sections under model bye laws of co-operative housing societies which cannot be amended?

Particulars of information required:

I am a resident of Swapnalok Towers Co-operative Housing Society. We have adopted the model bye laws for running the operations of the society.

I want to know about the specific bye laws mentioned in the model bye laws which cannot be changed by passing a resolution through a 2/3rd majority in a General Body Meeting?