請教 8 老師: 父母移民 I-864 問題

老師,

part 3 item 9 :

I am sponsoring the following family members immigrating at the same time or within six months of the principla immigrant named in Part 2 above. Do not include any relative listed on a seprate visa petition.

要不要 check this box ?

我為父母同時遞交申請, 他們人在美國, 準備放在同一信封, 分開的package.  有點糊塗,若填,上麵提到 do not include; 若填, 後麵的 household person, 就多一個人

先謝了.