Volumio 2 Raspberry Pi with Wolfson Audio card - Playback op

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1

Hi,

I have Raspberry Pi model B with Wolfson Audio card and Volumio 2. My Playback Options are displayed on the screenshot Image 1.jpg and those are the only working combination to get the sound from SPDIF digital output.
Question is: should I2S DAC be turned on to get Hardware Volume options active? DAC Model in Audio Output should also be RPi-Cirrus, right? And which Mixer Control should be active in that case? Can I get sound from SPDIF and 3,5mm stereo output of Wolfson Audio card simultaneously?

Thanks!