I made this combo of products. But i want the user to choose 1 of the 3 nightgown models, plus the coat and the body. However, is mandatory to choose  1 variety of every product. Can I do that?

https://ananda.com.uy/producto/pack-dulce-espera-1-camison-bata-body-remera-bebe/?attribute_pa_color=blanco

Also i need to know how can I display the combo price in the list view of the category Thank you https://ananda.com.uy/packs-navidenos/