Legal Question in Family Law in Nevada

Your question is a bit vague.

While a plaintiff who gets no opposition COULD take default and end the case, I know of no way for a defendant to require the plaintiff to do so.

And, depending on what is at issue, a court could require a prove-up on the issues, even if a plaintiff tried to end a case on the papers.

All that said, there is no law requiring a defendant to attend a trial. Of course, really, really bad orders might happen to be ordered against a defendant who elected not to show up.

You really ought to consult with competent counsel.