[Plugin: eShop] Customer Detail with extra textarea

look at using option sets.

Or see https://quirm.net/wiki/eshop/additional-plugins-and-code-snippets/add-a-field-to-the-checkout/

As we haven’t heard back, I can only assume that this issue is now resolved and am marking it accordingly.

Sorry… I didn’t notice this reply previously..

I tried installing this plugin but I cannot see the new setting page in admin area to configure new field?

Please advice. Thank You.

you can add an option set to a product, and can use a textarea within that.

If you want to replace the checkout, or precede it with a textarea- then that is not possible within the basic eShop plugin.