If you don't qualify for an IA through OPA, you may also request an IA by submitting Form 9465, Installment Agreement Request, with the IRS. When you request an IA using the form, generally, you'll receive a response from the IRS within 30 days notifying you of whether the IA request was approved or rejected.
IRS Form 2159, Payroll Deduction Agreement, is a tax document to set up an installment agreement, a form of tax debt relief that allows taxpayers to make monthly payments on their federal tax debt by having funds withheld from their paychecks and sent directly to the IRS.
About Form 9465, Installment Agreement Request. Internal Revenue Service.