Deductions & credits

I also have Windows Home & Business .   It works in mine.  It’s automatic depending on your birthdate.   Go back to Personal Info and check your dates.   Or you have a AGI over 175,000 (250,000 Joint) so you don’t qualify.   Or you are filing MFS.  If you are married you have  to file a Joint return.   

You can switch to forms mode and find it.  If it doesn’t show Schedule 1-A in the list of forms you can open it using Open Form at the top of the left column.