Can not find custom form style in settings ?

Hello and welcome the Community, russelljstokes-b

Custom form styles are located under the Settings menu when selecting the Gear icon (Take me there). Please note, this feature is only available when accessing QuickBooks Online via the web (not the app).

For further tips on how to customise invoices, estimates, and sales receipts in QuickBooks Online, click here. Get back in touch below if you need any further support!