To fill out the worksheets, follow the instructions in the Washington State Child. Support Schedule (WSCSS).The difference is you'll need to fill out the joinder section of the petition. This joinder section will be filed with the rest of the petition. Learn how Washington's community property rules apply in divorce, how judges divide assets and debts, and how you can avoid having a judge decide for you. Typically, the forms are self-explanatory. You can either obtain the necessary physical forms inperson or online, fill them out and file them with the court. This webpage provides an example divorce settlement agreement for matters in Washington State (WA). Check if you qualify for an uncontested divorce.