The ability to select multiple products from a variation

Site URL: https://www.sugarrushbros.co.uk/products/p/ajj65pcq5u6qihxlykloywwctktl5a-bng5g-6ce5j-tzcd3-zedb6

Requirement 

To have the ability to select a product example would be a Letterbox package once this is selected > Then have the ability to add a variety of sweets i:e 6 different varieties that can be added to the one package.

Is this posssible

you can create a form where a customer can select the 6 varieties in the Additional Info for the product.