Business license for out call holistic bodywork training courses in the state on New York, USA

Please read prior making any offers I need a legal service to obtain a business license in the state of New York to be able to teach holistic bodywork techniques outside of my place of business. I am a York State Licensed Massage Therapist would like to obtain a business license to be able to provide a holistic bodywork (body massage) to anyone who would like to learn how to do massages. I am going to conduct business at my student’s facilities such as beauty spas, people houses or other facilities. It menace that even though my businesses a home based business I should be able to conduct business in different locations. About my school: My 16 hours training course is not a registered training facility and does not provide any type of credentials for students to legally provide any type of body massages. The school is simply designed to teach people how to perform (not legally practice) a body massage. We provide a certificate of completion that does not indicate in any way that people can display it in their place of business and be able The school registration forms include a disclaimer stating the type of business I conduct. If you are interested please ask relevant questions to clarify the job that we can properly price this project