NOL carryforward for trust. How to report on IRC 172(b)(3)

I have a NOL for the trust, reported as a -900 on line 23 of Form 1041.  I can't find form IRC 172(b)(3) which Turbotax says should be used to report this if I want to use the NOL as a carryforward.  Under the section to print all worksheets for your records I found a Form 1041 Schedule of Net Operating Loss Carryovers (keep for your records) which identifies the Current Year Operating Loss in Part II on line 1.  But I DO NOT FIND FORM IRC 172(b)(3).  Where is this form?  Somehow I need to indicate to the IRS that I want to do a NOL CARRYFORWARD, NOT a NOL CARRYBACK.  

Please help.  This is ridiculously confusing for something which should be so simple.  I also can't find a Form IRC 172(b)(3) in the IRS documentation.