Wisconsin Medical Care insurance subtraction

On the Wisconsin form, TurboTax did not include Medical Care Insurance subtraction on Schedule SB "Subtractions from Income" line 6 "Medical care insurance" for Self Employed Persons until I went to TurboTax "Forms," then the "Medical Ins Wks" and entered an amount on Line 1 of Worksheet 1-Self Employed Persons. Then all the rest of the lines properly filled in on the worksheet. This subtraction from Wisconsin income did not trigger properly using EasyStep. This now changes my refund from Wisconsin.

The taxes were filed electronically. Now I need to file an amended return, but don't see how to. How?