Esports alliance mechanical keyboard how to change lel?

Each keyboard is different, my Leiber v500s, directly in the upper right corner to turn off your keyboard, you can find a Fn key in the lower right corner of the keyboard, and then with the upper right corner of the PS, PL these keys try to see.

Each keyboard is different, my Leiber v500s, directly in the upper right corner to turn off your keyboard, you can find a Fn key in the lower right corner of the keyboard, and then with the upper right corner of the PS, PL these keys try to see.