i have midi device without fader buttons, they are regular buttons. is it possible to assign control room level them? pressing for volume up, pressing on other button to volume down. there is only volume option in generic remote to use it with fader knobs.
You could assign the Dim function to one of the controller buttons and use it to toggle the volume level.
Another, but a more involved solution, would be to write a custom MIDI Remote script that would increment the volume control by X each time the button is pressed. This would of course require some investment and if you have no familiarity with JavaScript, perhaps not a viable one.