Deduction regarding NPS in sec 80CCD

hello everyone,

pls tell me if any person working as an employee and employer doesn't contribute in NPS

and employee needs to claim deduction under section 80CCD under income tax act.

kindly suggest me how can he claim this deduction and upto which amount he can contribute in this fund and what is the procedure for invest in this fund.


pls tell me also about this maturity amount after retirement


thanks
pranav