Qualified medical child support order

Hey i have a question hopfully some one can help with. I am trying to get my son on my health insurance and missed the enrollment period. I got a qualified medical child support order (qmcso). Now it seems pretty straight foward except this part. The part i had underlined. This is just a sample form to. And also it asks who the petitioner is and the respondent. Would it be the same as the child support case? Or am i automaticly the petitioner? I ask because originally she took me to court. So on the court paperwork she is the petitioner. I hope i explained this well enough i thank you for any help.