Ensure the Phantom Power is switched off at the Mixer and the Channel Muted or the volume turned all the way down.
Connect the Microphone lead and the Mixer lead to your unit.
Turn on the Phantom Power and Unmute or turn up the Channel volume.
IF YOU ARE USING A MOOSE
Adjust the Volume Level Knob so you can get the maximum level going to your Effects without overloading the Effects. In some circumstances the Effects will have enough headroom to accept a very high level without overloading. In these circumstances adjust the level to the maximum amount without causing the Mixer to overload. The possible range of effects and their controls are too varied for a tutorial on this website, so please refer to the individual manufacturer's instructions.
Effects such as Compressors, Limiters and possibly Equalisation could increase the chance of feedback happening in a situation where speakers are placed near the microphone if the effect is not adjusted properly. Distortion type effects are very likely to cause feedback unless headphones or in-ear monitors are used.
Generally the effects would be set up to be the same volume with the effects turned on or off, but there is no hard rule on how you do your setup.
DURING THE SOUNDCHECK
To get the best level for the Mixer, keep the footswitch depressed and play at your loudest performance volume while the Audio Engineer adjusts the Line Trim on the Mixer. If you have added any Effects that boost your volume turn those effects on as well.
Take your foot off the footswitch and if you have any effects turn them on or off to suit your normal playing volume as the Audio Engineer balances the sounds of the band as a whole - remember you only want the boost during your solos.
When disconnecting your unit, ensure the Phantom Power is switched off at the Mixer and the Channel Muted or the volume turned all the way down.