How do I start a duplicate return

[typealeo]

I didn't take out enough Fed Tax and want to see how to fix for 2017.  I will use 2016 tax data to come close but need a second return.  Can't seem to figure it out.  I could do this when I had it loaded on my PC but now online, I don't see how to save more than the 1 am on.

[CapB]

To adjust your paycheck withholdings check out FAQ below:

https://ttlc.intuit.com/replies/3301783

You can also update your W-4 with the link below for the TurboTax W-4 Calculator Tool:

https://turbotax.intuit.com/tax-tools/calculators/w4/