For live, you must communicate with sound engineer to use the device. If you are the one singing, then you need to get someone train to use that device. Normally the sound engineer have no time for this device. For recording, normally you will record a dry sign/voice then aux out into the device and return aux. Then you record the wet(processed) signal back into the DAW. It is easier to use soft effect plug-in rather than hardware. A lite version of a DAW will have eq,compression,reverb,chorus,flanger and phaser at least. Sometime got freebie plug-in like ADT, vocoder, auto pitch correction,auto filter and other type of modulation.