Yes, during the subscriber's lifetime the option and family details can be changed. However, after the subscriber's death, the family cannot alter the option that was last submitted by the subscriber.
Source: NPS Rule 16
Can the option under Form-1 be changed after submission?
Related Questions
What happens if there is no eligible family member at the time of a subscriber's death?
What if my appointment order was dated December 2003 but I joined in February 2004 — which scheme applies?
Is the NPS corpus guaranteed?
Why is 40% of the corpus locked into an annuity?
Is there a penalty for not contributing to Tier-II in a year?
This answer is for informational purposes only and does not constitute legal advice. Always refer to the original rules and consult competent authorities for official interpretation.