Hi @c64girl
This is not a Prestashop e-shop.
It is almost impossible to build a similar function into Prestashop.
It would be necessary to adjust according to the used template, it is not possible universally.
It is not a problem to add a short and long description to the attribute, the problem is with the selection of the attribute in the product detail.
To dissuade you from doing so, I will also write you the price for any modification. You need to count on a minimum of 10 hours of work and another minimum time of 3 hours for editing the template. So at least €500, but realistically around €1,000