I want to add multiple selection criteria for my product.
For example I am wanting to sell a pick and mix bag of sweets and this would require the customer to select 10 different sweets out of the 30 sweet options (preferably pictures) to customise their bag of sweets.
Any advise on how to do this please.
You could use an app to create bundled products.
Your would create 1 product for each of your sweets and the user would add then to a product bundle which will finally be added to the cart.
Find here a list of bundle product apps