soundcraft

I would like to know if in soundcraft si expression it is possible to send the channel to the waves super rack and return to the same channel but already processed?

Our church recently acquired a Soundcraft SI Impact from another church that was upgrading. Our previous board was analog so we're all new at this digital revolution. Without any mix selected, we adjust our House levels. Then, if selecting Mix 1 we adjust our Monitor levels (we only have 2...