Have the logitech g502?

I want to set in fortnite so that you can edit back with the mouse wheel click to the right. Just how do I do that. If I go into the setting and click my mouse wheel to the right, then there's no reaction, only when I press other buttons. Can you help me?

In-game change the key assignment for the "backspace key" and then select the one on your mouse. (usually goes everywhere, never gambled Fortnite)

Fortnite only supports three mouse buttons.

Left mouse button
Right mouse button
Middle mousekey

The Logitech Gaming Software recognizes all other buttons.
Here you can now set which key press on the keyboard should be simulated.
For example an I if you rock your mouse wheel to the left.

Fortnite can then do something with it again.