How to create multipack of the same item?

How can I create a bundle with the same item? I am the brand owner of my product. I’ve seen competitors offer their item in a 1,2 or 3 pack.

Do I have to create a new ASIN and pack 2 or 3 of the same item and send it in to Amazon FBA or is there a way I can have Amazon do it similar to a virtual bundle?

Thank you!