NP, @misskeiko.

1. You should enter all the details.  If, however, the only tax withheld is MN NR Entertainer Tax, see #2.

2. I didn't check but don't believe Form ETR is available in Lacerte.  If that is correct, there is no reason to enter the MN NR Entertainer Tax withholding on that screen for purposes of e-filing.  You may want to do a bit more research but it would appear that FTB may not allow OSTC for MN NR Entertainer Tax because it is not a gross rather than net income tax.