Whose signature is required on the family room affidavit form for Hajj?

Whose signature is required on the family room affidavit form for Hajj?

حج کے لیے فیملی روم کے حلف نامے کے فارم پر کس کے دستخط ضروری ہیں؟
Explanation

The family room affidavit form requires the signature of the group leader, who is a family member.