of the public housing agency, escrow for participating residents, in accordance with paragraphs (2) and (3) of subsection (e), residing in units assisted under section 8. (B) Calculation and tracking by owner The owner of a privately owned property who voluntarily makes a Family Self-Sufficiency program available pursuant to paragraph (1) shall calculate and track the escrow for participating residents and make escrow for participating residents available in accordance with paragraphs (2) and (3) of subsection (e). (5) Exception This subsection shall not apply to properties assisted under section 8(o)(13). (6) Suspension of enrollment In any year, the Secretary may suspend the enrollment of new families in Family Self-Sufficiency programs under this subsection based on a determination that insufficient funding is available for this purpose.