When you first try to open the ordering panel you'll be asked to assign a price list if you haven't already. The products that appear in the ordering panel are those that have a price defined in the price list assigned. You may optionally toggle the switch in the bottom left to show only those that match the aspect ratio of the current crop or all items.
Select the quantities for the items you'd like to add to the cart and finish up by tapping the button "Add to Cart".
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