Hi Keith, yes, it is possible to order multiple sizes of the same product by enabling the "Allow users to select multiple variants" option. To set this up, login to Neartail > click Forms > click on the form to open it > Edit page will be displayed > In the Edit page, click on the product to select it > click on the settings gear icon for this product > Product settings page will be displayed > enable the "Allow users to select multiple variants" option (see screenshot below) and click Save. This will allow users to select different sizes of the same item without losing their previous selections. Please try this and let me know if you have any other questions.