Compulsory Attribute/Choices

[rumapop]

Hello,

I am sure this is simple, but can’t find out how to do it.

I have created an attribute “Size” for a product & then have added my choices (S,M,L)… all good. But I need this information to be compulsory so that the customer has to select it or they cannot add the item to their basket. I am sure I have seen a check box for this option, but cannot see it anywhere now!!

Lucy

[NormanRouxel]

It will be compulsory as it is. The first Choice will always be selected so the customer will get Small if they add to cart without doing anything else.