Retirement tax questions

thanks, all I was asking is can I, after entering the information for husband and wife, and before filing, switch back and forth between married filing joint and married filing separately.    What I gather from the other response is that I can switch it, and then re-enter the spouse information in a separate return

 

I was hoping Turbotax could just handle that back and forth until filed, but it turns out that it cannot

 

thanks again