You must report the Schedule K-1 income initially on the Form 1040 0r Form 1041 in which name the income was received.
You are now filing a FINAL Form 1040 for the decedent, so you would first report the Schedule K-1 income in the appropriate category of income, such as dividends as an example, on that Form 1040 and then use the adjustment shown in the PDF attachment, for a nominee allocation, and I would further suggest that you right click the adjustment field and enter supplemental information naming the EIN and ID of the Form 1041 on which you will report the remainder of the income attributable since the income was received "In Respect to a Decedent" ("IRD") such as received IRD in nominee estate Form 1041 46-1234568