QuickBooks Desktop supports electronic payment for Washington Paid Family Leave. You'll have to set it up first in the Payroll Center. Let me guide you through the steps.
Once you're done, go to Employees, Payroll Center, and then Pay Liabilities to pay your premium. Then, click View/Pay.
You can read this article for more information: Washington Paid Family and Medical Leave (New Tax 2019).
Feel free to check these articles for future reference:
Fill me in if you need help with anything else. I'd be sure to jump in anytime.