I don't know what version of QBO GlinetteC is using, but I was looking for the same page to change the settings and this is how you locate it:

From the Gear, select Payroll Settings, State Taxes, Click the "Ok" button on bottom of screen and it will take you to the Workers Comp page where you can view and edit the settings.

Very strange way to find that list if you ask me.  : \