Need help adding genres to my movies

Hello! I need help adding some genres to my films. I cannot add them. I want “Found Footage Horror” and “B-Horror” added to No Escape and Freddy Fazbear’s Pizzeria No Escape: https://www.imdb.com/title/tt35977310/?ref_=nm_knf_t_1 Freddy Fazbear’s Pizzeria: https://www.imdb.com/title/tt36870533/?ref_=nm_knf_t_2