Order multiple items on the same product page

Site URL: https://knitrowan.com/en/products/zb303-pink-rose-stole

Hi,

My client has asked if this is possible using Squarespace? The example shows a product page selling a digital pattern, but you can add on multiple options, the correct amount of wool and colour for your size and also the option for the needles if needed. But, if a customer buys the wool or/and needles this will need to automatically come off the inventory? Sorry, not sure what the technical term is for this.

Thanks in advance