It always helps to provide as much information and context as possible if you seek meaningful answers. Asking a question with a short sentence leaves a lot to be guessed, leading to potentially unhelpful answers. Are you, by any chance, trying to determine if your QMS should address product design requirements? If so, against what standard? what type of product? what type of customization? Etc...
Design responsibility can be shared and co-owned between customers and suppliers. Sometimes, suppliers have partial responsibility towards product design.