Why can't I change my yahoo Display Name?

Yahoo Messanger- display name?

• on yahoo messanger, i.m. or whatever, how do you change your display NAME? instead of having it be your first and last name. i cant find it. thanks:)

• Answer:

  you just chose the person which you wanting to change his name then right click on it --> then chose contact details --> then you can write the first and the second name whatever you want to add then save and close that's all