Samsung Pay+ Premium Benefits

Samsung announced in partnership with Curve… Samsung Pay+ Premium. I think its the equivalent of Black? But it says I get unlimited 1% cashback on 3 companies from a list of merchants… Where do I select the 3 from the list? Where is the list?
I can’t find any updated info regarding this. I don’t want to waste the opportunity for cashback.
And on the Curve app there is no place to select any thing, only the Curve Cash rewards, which is a different thing.

Many thanks