Just wondering what are the regulatory requirements to include neurofeedback/biofeedback in my practice?

NSRP lists areas of practice and populations relating to scope but doesn’t approve specific therapies or modalities. If the approaches you noted are used in empirically supported situations, and provided you have the appropriate competence it would not be an issue. Concerning competence, like any registrant, you would be expected to have taken steps that are consistent with Standard 3.2 from the Standards of Professional Conduct:A registrant planning to change or expand her/his professional practice to include a new area, client group or activity, beyond the registrant’s existing declared competence shall undertake appropriate training, education and supervision. In the event that there are questions regarding competency, the registrant must be able to demonstrate to the NSRP the preparation they have undertaken. Individuals on the Candidate Register planning to expand her/his practice shall submit a plan of action to NSRP for approval.