Ataru Striker question

By Seam, in Star Wars: Force and Destiny RPG

Hello!

I am new to Force and Destiny, and I have a question regarding Ataru Technique (I hope that is the right term in english: the ability in the second row, second from the right). How exactly does it work?

Do I have to roll each round to use Cunning instead of Brawn?

Thanks for any help.

That Talent allows you to use Agility in place of Brawn for the Lightsaber skill. No roll required.

Thanks!

and this talent is required to use signature talents like hawkbat swoop as they require a agility+lightsaber roll.