I bought some olives. How do I use them to buy a gift for a friend?

EDIT: I submitted a ticket about this, here is the reply:

Hello,

I'm sorry, but Olives that you have purchased for your own account are unable to be Gifted. To Gift olives to another account you must make a new specific Gift transaction:

https://fmsp.en.navyfield.com/Payment/GiftOlive.aspx?widget=3

Sorry for the inconvenience,

TeamNF Mk2

I thought the whole point of olives was to be a kind of in-game currency, but apparently not. It begs the question: What is the point of olives?