Visitors Visa for family (Mom and Brother' family)

[happyface76]

Hi,
My self and my wife have Green Card and we would like to invite my mom and my brother's family (Brother, Sister-in-law and 2 childern).

• Should I prepare seperate affidavit of support?
• Should I prepare seperate (one for each) documents (bank statement, statement from my employer, tax return etc)?

Thanks in advance for your help

[immihelp]

1. Yes.
2. No.