What do you mean by "another spot"?
Other that the Federal Information Worksheet, Part VI under "Identity Protection PIN:"? For taxpayer/spouse, not that I know of. If the dependents have them that now goes on the line with the dependent information.
The IP PIN wont display on the printed copy, they do that for security purposes, so if that's what you're seeing an wondering if you missed a place to enter it, that's by design.