Hi Ilian, thanks for hint! I have found the file and modified it, but CTRL + 0 is already used:
MenuItem["End &Inline Cell", "MoveNextCell", MenuKey["0", Modifiers->{"Control"}]]
So I modified it using "F8" instead. It works as expected. Thanks!
MenuItem["Inline Free-form Input",
KernelExecute[AlphaIntegration`LinguisticAssistant[InputNotebook[]]],
MenuKey["F8", Modifiers->{}], MenuEvaluator -> "Local"]
