Change behavior of mouse buttons - do I have to write a driver? (Sharkoon Drakonia)

Change behavior of mouse buttons - do I have to write a driver? (Sharkoon
Drakonia)

I just bought a Sharkoon Drakonia (just for information). It has 11
buttons, but only two of them (except left, right and middle button of
course) can be used as 4th and 5th mouse button (eg. in games), the other
ones can only be modified to behave like a double click etc. via the
configurator software shipped with the mouse. So I wondered if there is a
way to completely change or remap (some of) the mouse buttons to be
recognized in games as for example "Mouse 6" and "Mouse 7". I think I have
to write a driver for it, am I right? Is there another way to achieve my
aim?
Thank you in advance!