To fill out the Installment Agreement Request form, you will need to provide some basic information about yourself and the debt you are seeking to repay through an installment agreement. This may include your name, address, social security number, and the name and contact information of the entity to which you owe the debt. You will also need to provide information about the debt, such as the amount owed and the proposed payment amount and schedule. Be sure to read the instructions carefully and fill out the form accurately to ensure that it is processed correctly.