under this part who has a period during which the borrower was employed full-time with a qualifying employer but did not satisfy one or more qualifying monthly payment obligations during such period, such as a borrower who was in deferment or forbearance, may satisfy one or more monthly payment obligations of that period at a later date by paying the additional amount needed to satisfy the qualifying monthly payment obligation, in accordance with a process established by the Secretary. (ii) Determination process The amount of past monthly payment obligations satisfied by a payment under this subparagraph for a period of employment shall be determined using the amount of the borrower's monthly payment, based on any repayment plan, as selected by the borrower, that could have been selected by the borrower during such period. The Secretary may require a borrower wishing to satisfy past monthly payment obligations under this subparagraph to submit any additional information necessary to calculate the amount of the past payments. (iii) Limit A borrower may not satisfy more than 36 past monthly payment obligations under this subparagraph. (6) Special rules relating to Federal Direct Consolidation Loans (A) Review of any new consolidation loan application (i) Public service loan forgiveness option on consolidation application Beginning on July 1, 2019, the Secretary shall include, in any application for a Federal Direct Consolidation Loan, the option for the borrower to indicate that the borrower is consolidating for the purpose of using the public service loan forgiveness program under this subsection. (ii) Review Beginning on July 1, 2019, the Secretary shall, after issuing any Federal Direct Consolidation Loan to a borrower who indicated an interest in the public service loan forgiveness program on the loan application— (I) request that the borrower submit a certification of employment