I chose the first option. We did not activate "Advanced stock management system", so we manually entered the actual stocks for two pairs of trousers, yellow = 10 pcs and black = 11 pcs. The problem is that after the data is saved and after I want to add another new feature, called "Size", the feature that I need, the "Add to Cart" button is missing. However, I do not want these options to appear in the payment block (where I choose the number of pieces, and I see the final price) I would like to be included in the block describing the product I sell. If you still have patience ... I would like a suggestion