Estoy tratando de construir una jerarquía de Treeview de elementos y etiquetas que se puedan marcar y que sean más o menos así:

Standalone Controls (label, root)
|__Check/Uncheck all controls of all groups (checkbox)
|  |
|  |__Controls group 1 (group description label)
|  |  |__Check/Uncheck all these controls (checkbox)
|  |     |__Control name 1 (task)
|  |     |__Control name 2 (task)
|  |     |__Control name 3 (task)
|  |       
|  |__Controls group 2 (group description label)
|  |  |__Check/Uncheck all these controls (checkbox)
|  |     |__Control name 1 (task)
|  |     |__Control name 2 (task)
|  |     |__Control name 3 (task)

...y así.

O esta variante a continuación en el caso de la jerarquía que se muestra arriba podría ser demasiado difícil de codificar:

Standalone Controls (label, root)
|
|__Controls group 1 (group description label)
|  |__Check/Uncheck all these controls (checkbox)
|     |__Control name 1 (task)
|     |__Control name 2 (task)
|     |__Control name 3 (task)
|       
|__Controls group 2 (group description label)
|  |__Check/Uncheck all these controls (checkbox)
|     |__Control name 1 (task)
|     |__Control name 2 (task)
|     |__Control name 3 (task)

Sin embargo, lo que llegué hasta ahora es esto:

Esta es una muestra del código que tengo:

[CustomMessages]
StandaloneDescr=%nStandalone Controls
ButtonsDescr=%nButtons
CheckboxesDescr=%nCheckboxes
GroupboxesDescr=%nGroupboxes
KnobsDescr=%nKnobs
...

[Tasks]
Name: WinFormsControls; Description: Check/Uncheck all; GroupDescription: {cm:StandaloneDescr}

Name: WinFormsControls; Description: Check/Uncheck all; GroupDescription: {cm:ButtonsDescr}
Name: WinFormsControls\CButton; Description: CButton
Name: WinFormsControls\GlassButton; Description: Glass Button
Name: WinFormsControls\MyCommandButtonNET; Description: My Command Button.NET
Name: WinFormsControls\PulseButton; Description: Pulse Button

Name: WinFormsControls; Description: Check/Uncheck all; GroupDescription: {cm:CheckboxesDescr}
Name: WinFormsControls\DontShowAgainCheckbox; Description: Don't Show Again Checkbox

Name: WinFormsControls; Description: Check/Uncheck all; GroupDescription: {cm:GroupboxesDescr}
Name: WinFormsControls\Grouper; Description: Grouper

Name: WinFormsControls; Description: Check/Uncheck all; GroupDescription: {cm:KnobsDescr}
Name: WinFormsControls\Knob; Description: Knob
Name: WinFormsControls\KnobControl; Description: KnobControl

...

¿Cómo puedo hacer esto bien?