As a retiree, where do I enter the amount I paid for health insurance premiums on Wisconsin form SB?

Enter this amount on line 6 of Wisconsin Schedule SB, Medical care insurance.

For more information, please see the 2021 Schedule SB Instructions, found at DOR 2021 Individual Income Tax Forms. 

You may need to complete Medical Care Insurance – Worksheet 2 – Others, shown in the instructions.

2/20/22: WI Schedule SB, form 1 NOT WORKING CORRECTLY.  On one return, the LTCi premiums from Easy Step were carried into line 7 on WI Sch. B, BUT ALSO into line 6. That is, the "Additional medical insurance premiums" and SSA-1099 Medicare B premiums that were noted in the Easy Step section were NOT correctly imported into line 6, but replaced with the same number as line 7!!  That prompted me to check my other, already filed return; no "Additional medical insurance premiums" were transferred to line 6, a "0" was filed. So now I'll have to file a printed amended return :(   And I'll have to review previous year's returns, too, in case this is a carryover glitch.