Retirement tax questions

Yes, I am asking about soc sec income received by my spouse and myself.  I need to enter it in order to complete my 1040, etc. using TurboTax on my laptop.  I have been using TurboTax for years - and for the more recent years, I have had to include our soc sec income, Medicare deductions, etc.  This is the first time that I have had a problem.    

The problem occurs when entering in the step-by-step mode, not forms.  Yes, it's the screen with 2 columns, one for my info and one for my spouse.   Yes, I entered "the SS in the right place".   I was able to enter the Box 5 (Net Benefits) and Box 6 (Fed Tax Withheld) but not Medicare Part B Premium amount - and I could not enter anything for my spouse.  If I switch to forms mode, I am able to enter all required soc sec data for each of us.  If I then go back to step-by-step mode, I can see my entries and edit them if I choose to. 

BTW, I do not have to "wait until (I) get the SSA-1099" for each of us.  I already have them.   I know that our soc sec income if not fully taxable and hopefully so does TurboTax  🙂 

Thanks.