I am having problems even asking the question, screen keeps telling me to fix highlighted areas, but nothing is highlighted...?!

My problem is I have client who filed as single in 2019, got married in 2020 and now is the "spouse".  Is there a proseries way to change the status, do I just manually move the taxpayer info to the spouse side on Info Worksheet, or do I create a whole new taxpayer file for the married couple?  I have already transferred the 2019 PS file (as single) to 2020 PS.  Does it mess up the file name now if I use the same file?