How to achieve Tremolo effect? OSC Mixer/volume?

Is there an easy way to modulate the volume of all OSC at once? And still be able to mix them to each other? Preferably pre filter.
Do I really need to use a Macro for that?

If you want to modulate them by voices, you need to mod the volume of each oscillators.
If you need a global tremollo, use a macro and mod it.or a sync lfo.
Or per voices, you could modulate the amp sustain ,it will depend of your patch.