You can create custom keyboard layout files using the Virtual Keyboard Creator tool, and either keep them in LayoutsFolder for the control to load automatically, or load them into a KeyboardLayout by calling Create and assign to TemplateLayout.

In standard Mode, the control loads predefined layouts from the assembly's resources.

System.Object
    MindFusion.UI.WinForms.KeyboardLayout

KeyboardLayout Members
MindFusion.UI.WinForms Namespace