Hi ksteele,
Welcome to the Community. Being able to run payroll is essential to ensure that your employees are paid. QuickBooks Online Payroll is a great program that gives you the ability to pay your employees and track your remittances. I'd be glad to help.
At this time, the option to modify the EI rate isn't available. You can modify it when creating the payroll.
If you'd like to include the option to modify the EI rate in QuickBooks, I recommend that you send us Feedback by clicking on the Gear icon at the top. This is sent to our Development Team to consider for future updates.
Let me know if you have questions, I'll be happy to help.