Multiple selections

[newage]

Hi!

I am new with PrestaShop.

I sell a sprouter as single product with multiple FREE matherials along with it.

 

I want to give an option to the buyer to select combination of 1 or more of these matherials ONLY given with the sprouter. With other words he SHOULD NOT be able to order or even see the free materials separately. Best is done with checkboxes or multiple selection from a drop down menu.

 

However the drop-down list in PrestaShop allows only one selection. How can I do that?

To get the idea better, here's a screenshot (see attached file):

 

Circled in green is what I initially did - all free materials in one group. And they do show, however only ONE selection is available to the buyer.

If I organise them in different groups, one for each free item, it becomes ugly and non-functional - now I have multiple drop-down menues with single item in it.

Circled in red is what I inserted as HTML code as an idea how the buyer can select the free materials.

 

Please, help.

Edited May 24, 2012 by newage (see edit history)