In the supernatural museum, a haunted doll needs to be personalized with a name. How do you do that on PS?

Select the item, press Triangle to go the name box at the top (from where you can left and right through the things of that type), and then X to select that box, then enter the name. 

thanks

I call her Sally - each and every one... that's what she told me her name was. And she should know.