Once the nozzle has heated up to your desired temperature you can begin loading filament.
Starting with Tool 0, select 20mm of filament, over a period of 1mm/sec, and then click “Extrude”.
Place your index finger and thumb around the filament your are loading. You should begin feeling the filament being tugged into the Quad Head, repeat this action with the remaining filaments.
Once all four filaments have been partially loaded into the QuadFusion, you can begin to load them each 20mm at a time until you see filament coming out of the nozzle.
When unloading filament you will need to keep the nozzle heated. The purpose of this is to make sure when you are unloading the filament that it doesn't break when retracting.
Furthermore, since your filament has already passed through your QuadFusion the gears have already made a track in the filament. This means that you are able to retract the filament at a faster pace.
Thus, when retracting filament, you will want to select whichever tool you wish to start with, choose 50mm, at a pace of 15mm/sec, and click "Retract"
The filament should begin to retract at a quick pace. Repeat the same action with all the other filaments until they are completely out of the QuadFusion.