Sc/st act questions

If you have been summoned to police station, you may just visit accompanied by an advocate, and can give a statement in detail about the incidents took place then.

The police may not arrest immediately without registering FIR.

Thanks!! Will the investigation happen after filing FIR? Or direct arrest?

If the police is taking cognizance of the offence they may remand the accused through magistrate, however it is advisable that you may be accompanied by an advocate for the preliminary inquiry 

Thanks for the information. He has not filed PCR complaint and just filed a normal complaint. As I mentioned earlier we have footage where he manhandled our parents and we are ready to submit for proof. Is there any chance he can go PCR petition/complaint after the initial complaint and will it be valid? 

He is simply enhancing bargaining power. He can even threaten the police on inaction on SC/ST complaint.  You have to harp upon the evidence you have.