Users to perform different actions

For an eCommerce application, we have recorded a scenario of login till payment for 1 user. Now, we have created variables for Users (by passing them through a csv) and for products (csv file).

Now, during the runtime we would require the users to shop different products, all of them should not click on the same product which was done during the recording. How do we acheive this in Neoload where all the users shop different products?