Good day. Please how do I add custom fields to customer details using quickbooks plus online

Hi there, Isaaco,

Let's add custom fields to the customer details in QuickBooks Online.

Custom fields let you track the information that matters most to you and your customers. However, the process of adding them to the customer profile is available in QuickBooks Online Advanced. Thus, you can only add them to your sales forms and purchase orders.

Let me show you how:

1. In QuickBooks Online, click the Gear ⚙ icon at the right top.
2. Select Custom Form Styles.
3. Select the form you want to add a field, then click Edit under Action.
4. Go to the Content tab, then tailor the header.
   
5. Go to the Display section, then click + Custom field.
   
6. Enter the name of the field, then make sure to mark the box.
   
7. Click Done to save the newly added field.

Check this out to learn more on how to personalise your forms, change the design, and add the necessary info: Customise your invoices, estimates, and sales receipts in QuickBooks Online.

If you need anything else about adding custom fields in QuickBooks, please let me know. I'd be glad to help you out.