You can indicate that you shared the policy and prorate. The prorations must add up to 100%. If you took 100%, then his percent is zero.You can also click on the blue link. What percentage of the following policy amounts do you want to claim on your tax return? See "How do I figure out these percentages?" when you get to that screen.
To indicate you had insurance all year, see the image (click to enlarge and view). You would select the first option. You will also need a copy of the 1095-A on which you are listed.
For a detailed explanation you can use the information below.
https://ttlc.intuit.com/replies/4909853
