no need, i did not send one in and it was not requested. FRC is basically meant to show your dependent kids and spouse or family members under the age of 18.so FRC is needed only from those applicants who has a child together? What about applicants who has no child together yet? like in my case.
however, if they have changed rules recently and now they are starting to request it separately, then thats a different matter.
it is very easy to get a FRC from nadra, i think you can apply for it online as well. http://id.nadra.gov.pk/family-registration-certificate/