Re: I can customize the Invoice but having trouble with the PO.
I appreciate you reaching out to us in the Community, @leo-escubedo.
I can some share information about customizing form styles in QuickBooks Online (QBO).
I'm glad to know that you were able to customize your invoice. At this time, QBO doesn't have this option available for purchase orders (PO). However, you can use the Standard Master form to customize the PO as a workaround. Please note that editing this will also change the format of the other forms.
1. On your QBO account, go to the Gear icon at the upper right, then pick Custom Form Styles under Your Company column.
2. Locate the Standard Master form and click Edit on the right pane under Action column.
3. Make the necessary changes, then select Done.
This should answer your concern for today. Please let me know if you have any follow-up questions by leaving a comment. I'm always here for further assistance. Have a good day.