If mouse is over the Feature Tree Window: Scroll-Wheel = Scroll the Tree Note: The Feature Tree in SolidWorks is always in a separate Window (whether you're in a Drawing, Part, or Assembly file). In the Mouse Properties window, click the Pointers tab. How do I change the default settings in Solidworks? To change the default template: Click Options or Tools > Options. Customizing you wheel is easy as you can simply search for a feature and then drag and drop it onto which ever wheel you want within the customization window. Yes, it makes more sense with the pan and spin controls for wheel down to be zoom in, and with a 3D mouse “pull back” is zoom in, but having this one control on this one application be opposite the rest of everything on the computer makes less sense. Ctrl+wheel up is zoom in on every other application ever. All that 2-finger mouse clicking and the click/tap required by Catia is very frustrating if you've ever ran SolidWorks.
Drag and drop from the library or from another appearance listed.