Display a custom Item Field on Store/Web Store Tab

If a custom field under Web Store tab is needed, follow the steps below:

1. Navigate to Lists > Accounting > Item.
2. Click Edit on the Item.
3. Click Customize > Customize Forms.
4. Click Move Elements Between Subtabs.
5. Locate the custom field > Check the Select Box.
6. Select Store/Web Store on the Subtab field.
7. Click Save.