Spousal support (also known as alimony) is a court ordered payment from one spouse or domestic partner to help cover the other's monthly expenses. One rule of thumb is that spousal support lasts for half the length of a marriage that was less than 10 years long.What forms do I need to fill out for child custody divorce and spousal support? Use this program to ask (or "petition") the Family Court to change a support order if there is a "change in circumstances." You would fill out a "Request for Dismissal" form CV110 stating that you want to dismiss the RFO you filed. An overview of how child and spousal support works in Montgomery County, PA, including how to file for support and how it is allocated. Not sure which family law form you need? Use a form finder tool, which will guide you through questions to help identify the form you need. The paperwork can be complicated. Compliance with court deadlines and accurately completing the required documentation is crucial.