So i've made a new product and just want to add some tabs to organise the prompts better. But because it's a new product, if I go --> 'Part Properties' --> 'Prompts' --> 'Tabs, Calculators, And Warning Messages', The 'Tab List' column is empty, and when I try to right click and 'Add Item', enter the item name, it just doesn't add to the list. With our other existing products there are already existing tab items, which need to highlighted in order to add a new tab. So how do i add one for a completly new product?