You might just treat it like a normal mouse.
System > Preferences > Mouse
Adjust those as needed.
If its not being treated like a mouse then you'll need to search for
that keyboard in Google being used with Linux.

Look on the bottom of the keyboard - search any numbers on the bottom
for the manufacturer. The same one probably makes others.

Or you can find it online, post it here and someone might be able to
find more infor for you on it.