While the EVO 16 is designed to be the host interface with expansions connected to it, you can also send audio back out via ADAT if needed. Please follow the guide below to get that working.
Please be aware both the host interface and the EVO 16 will need to be connected to the computer to access these options, you will also need to ensure clocking is set correctly.
This can be done using the CUE mixes of the unit. In the System panel go to the Digital outputs and assign the CUE Mixes to the outputs as shown below:
Then you can assign the Mic channels to the 4 CUE Mixes, panning them hard left and hard right to keep them on separate channels. For CUE A, pull up the fader for Mic 1+2, for CUE B pull up Mic 3+4 and so on...
This will then send audio from the Mic inputs to the first set of digital outputs and whatever else you have connected via ADAT will pick these inputs up!