Quick little question!

It might of been asked before but I can’t seem to find it. Is there a way where my friend can join my party after I’m finished making my character? Or do I need to make his as well before he joins? It seems that I have to do his and mine then he is able to hop in. Is there a way where he can join and make his own character before the play through or no? Thank you!!❤️

EDIT: Comments saved me! Thank you all!!