Use of Notary Rules and Regulations

If a sole or joint shareholder is NRI, can he / she provide a notarized document / Affadavit for a Name change , NOC or any other purpose as per country of residence (not India) ? or does NRI also have to provide Affadavit on stamp paper on respective state government on his / her trip to India ?

May I request an expert on subject to respond ? Need clarifications on No-Objection-Certificate on transmission process if one of the legal heirs is NRI.