B2 visa for my child

Hi everyone, need an advice. I need to apply for a B2 visa for my graduation. I want to take my 8 year old daughter along with me. Should I,

(1) get a B2 visa for myself first, and then Dropbox for my daughter or

(2) apply together as a group for the visa slot

(3) apply for myself separately and then book a separate slot/interview for my daughter

You both can apply at the same time, by adding your child in your CEAC profile.