multiple product selection

[cooljais]

Hi, 

I have a store on Prestashop 1.7.6.5. I have a requirement, where in I offer customers an option to chose a Gift Pack of Chocolates. This Gift Pack is one of my products. I want an option on the page of this product where customers can select from individual chocolates(a list of other products) that they want in the box upto a specific number.  The cost does not change, only providing an option to select what goes inside the box. 

I tried the combinations approach but that doesn't work out well. Tried searching on the forum but could not locate the information. 

Any help would be appreciated.