The ACR-3 can recall presets and control the volume output.
You can select up to 4 saved presets by pressing the knob and turning the knob left or right to select the desired preset.
For more information how, please read the How to set presets article here
The ACR-3 can also control volume. The user would determine what volume the ACR-3 controls when setting up the presets.
Learn more about how to set volume control on your ACR-3 here
For example, the ACR-3 can be setup to be a master volume control by enabling the ACR-3 remote for all outputs. Another common application is to set output 10 as a subwoofer outp and enable the ACR-3 to control just that output. More on how to enable the ACR-3 control can be found here