H4 drop box eligiblity for 6 year old

I am applying for visa appointment , H1B + 2H4 (spouse + Kid) . all of us has has valid stamping till feb-2024. My Kid is 6 year old Me and my wife eligible for drop box. Can I include my 6 year old also in the same appointment if i get the drop box slot in May / June 2024 ? Please advice.

Thank you in advance

Yes you all can apply at the same time under one appointment.