1) can I enter spousal support for 2016 2) where would I enter that amount?

[PhillipB · Accepted solution]

https://www.irs.gov/taxtopics/tc452.html

Where you enter the amount depends on if you received the support or paid it. 

If you received alimony, go to the Federal Taxes > Income and Expenses

scroll to less common income and expand it and select the alimony received topic

If you paid alimony, go to the Federal Taxes > Deductions & Credits

scroll to Other Deductions and Credits and select the alimony paid topic

Hope this helps