To change personal details on a student finance application, an individual typically needs to log into their online account on the relevant Student Finance website. Once logged in, there should be an option to update personal information such as name, address, or contact details. It is important to ensure that all entered information is accurate, as discrepancies can lead to complications in the processing of financial aid. After making the necessary changes, it is advisable to review the application to ensure all updates are correct before submitting. If further assistance is required or if there are specific circumstances that complicate the process, individuals could refer to the Student Finance website for additional guidance or support. Always ensure to check the website for the most current procedures and resources available.