My 2018 has the form 6251 in it. Turbo Tax is asking to provide information from line 11. There is not a line 11 for that form anywhere. What do I input?

My 2018 has the form 6251 in it. Turbo Tax is asking to provide information from line 11. There is not a line 11 for that form anywhere. What do I input? I have tried to put 0. It then wants info from other lines that are not there. such as line 3, 2e,2g.2h