All components have many properties like price, brand, type ect but there have some other important properties that I will try to explain you how there works.

Each items have two preset named Map and Menu
this preset will be apply on 3D models in different situation.
the first one named Map is use to draw the model in showcase and workbench
the second one is use to draw item in menu.

For each Preset you have 3 things to set.

• Position
  
• Rotation
  
• Scale

A slot it's a container where you can fit a component in it.
the first thing to set is the type of component you want to be able to fit in this slot.
For example on a radiator you can have two slot of type FAN.

For each slot you have also a preset it work exactly like the preset of the item BUT this preset will be apply on the component fitted in the slot.

To go further follow this guide: [HowTo] Use Models Builder