; and (II) the preference of the applicant with respect to— (aa) length of service; and (bb) method of service (in-person, virtually, or a combination of virtual and in-person); and (ii) the Director may waive the application under subparagraph (A) and select, in accordance with paragraph (2), an individual under section 154A(a)(3). ; and (B) in subsection (e)— (i) by striking The Director shall ensure and inserting (1) I n general.— The Director shall ensure ; and (ii) by adding at the end the following: (2) Units for national public health service program With respect to a unit of participants under the national public health service program, the Director, in consultation with the campus director, may assign such unit to assist more than one service site depending on the number of participants requested by such service site under section 154A(c). ; (5) in section 156 ( 42 U.S.C. 12616 )— (A) in subsection (a)— (i) by striking Each member and inserting (1) I n general.— Each member ; and (ii) by adding at the end the following: (2) Waiver for national public health service program participants With respect to a participant under the national public health service program, the Director may waive or modify the requirements of paragraph (1) for such participant during an emergency period declared by the Secretary of Health and Human Services under section 319 of the Public Health Service Act ( 42 U.S.C. 247d ). ; and (B) in subsection (b), by adding at the end the following new paragraph: (3) National public health service program Members of the Corps participating in the national public health service program— (A) shall receive the training required by State or Federal Government to perform tasks assigned to such member; and (B) may receive training from or approved by the Secretary of Health and Human Services with respect to the appropriate use of contact tracing tools, including the Text Illness Monitoring system.