Hi
Depending on your mixer, software or hardware, they can provide 'group' tracks. You can assign individual channels to a group, and manipulate the group from there. For example, for a drum mix, you can assign the drums to groups 1 and 2, as a stereo pair. Set up the pan, eq, and relative volumes using the individual mixer channels (channel strips). As the channels are all assigned to group 1/2, the group fader can now be used to fade up/down the entire kit, or send through an aux to a global reverb etc.
So the kit balance between the individual drums and cymbals is achieved with the individual channels, the overall level of the drums in the mix is controlled with the group faders.
tadaa!
Cheers
John