Hi,

At the moment Ornatrix command are not included in the Hotkey editor, however we are planning to add this in a feature release. For now you can open the script editor and switch between the brushes to see what commands open them, then use the Hotkey Editor to create hotkeys. 

For example, this command will activate the Comb brush context tool: setToolTo "oxCombBrushTool1";. You can do this with any Ox tool. 

If you are using Ornatrix v2 or older, you can switch between brushes using the number pad in your keyboard. 

Find the hotkey explanation for V2 here:

https://ephere.com/plugins/autodesk/maya/ornatrix/docs/2/Edit_Guides_Operator.html

Navegate to "Keyboard shortcuts and brushes". 

Jeordanis Figuereo (Product Designer. EPHERE Inc.)