If we are talking U.K. then if you passed your FI AOC initial after the implementation of this rule some 5/6 years ago then the privilege would be added automatically. If you were an existing FI then you had to complete a form and send a fee to have it added.
In Ireland - and some other EASA states, you were “invited” to attend a course to ensure you understood your obligations before being granted the privilege.
Not sure what the current state of play is.
So, it depends on where/when. An email to your CA would clarify their stance but if that’s UK based then it could take a few “days” to get a response.