Make sure all accounts are coded T or S, then go to File menu, and

PRESS THE SPLIT RETURNS. PRESS IT. 

That will SPLIT all items on the tax returns. All of them.

Open the Spouse's 1040 and prepare the Spouse's FIN114.

You'll have a 1040, but IGNORE IT. This file is only for the Spouse's FIN114.

Do not use Tools Options.