DCC Actions
If launched from within a DCC App, e.g. Maya, Kitbox enables some contextual actions via right-click menu.
Open
Select an item and right-click Open Asset.
Reference / Link
Select some assets and right-click Open Asset or use the shortcut CTRL+SHIFT+R, you'll be prompted to enter a namespace for referencing in assets.
Import
Select one or more items and right-click Import Asset, you'll be prompted to enter a namespace for importing assets.