Each principal beneficiary (and their family) is petitioned with a separate I-130 petition, and each I-130 petition has a separate I-864 Affidavit of Support. Each familyu2019s I-864 does not count the other family in the u201cfamily membersu201d in Part 3 (note that it says u201cDo not include any relative listed on a separate visa petition.u201d).If the two I-864s are filed at the same time for the two families, then each familyu2019s I-864u2019s household size (Part 5) would just count the number of people immigrating in that family, which is 4 (item 1), the petitioner (item 2), and the petitioneru2019s spouse (item 3), dependent children (item 4), and other tax dependents (item 5), if there are any. It would not count anyone from the other family.On the other hand, if one I-864 is filed for one family, and that family has already immigrated before the second I-864 is filed for the other family, then the first familyu2019s members will need to be counted in Part 5 item 6 (people sponsored on Form I-864 who are now lawful permanent residents) for the second familyu2019s I-864.