The Schematic - Mouse Wheel Configuration page of the Preferences dialog.
As its name suggests, theSchematic – Mouse Wheel Configuration page of the Preferences dialog provides options for configuring use of the mouse wheel when performing various actions within a schematic-based editor.
The Schematic – Mouse Wheel Configuration page is part of the main Preferences dialog (DXP » Preferences) and is accessed by clicking the Mouse Wheel Configuration entry under the Schematic folder, in the left-hand pane of the dialog.
Action - this is a list of actions that can be performed when working with a schematic-based document, for which the mouse wheel can be configured.
Button Configuration - use these options, associated to a specific action, to configure any keyboard button combination (Ctrl and/or Shift and/or Alt) that is required to be used, along with the mouse wheel, to perform that action.