Change photo copyrights

Hi there, My BTS photographer notified me that I wrote his name wrong on our show, FATED TO MY FORBIDDEN GARDEN(Love in the Mist). I'd like to change ALL of the photo credits under "Nicholas Bates" "Nicholas Bate" to his right name: "Nicolas Bates". I would do this myself if I could, but I can't find the button to change them. Thank you so much! Best, Angela