The requirements in this subpart apply to the licensees and other entities identified in Sec. 26.3(a), and, if applicable, (c) and (d). The requirements in Sec. Sec. 26.203 and 26.211 apply to the individuals identified in Sec. 26.4 (a) through (c). In addition, the requirements in Sec. 26.205 through Sec. 26.209 apply to the individuals identified in Sec. 26.4(a).