The bot recognizes all messages containing a "?" in the question channels as Questions.and opens a Question thread for you. These channels can be identified by the "-questions" suffix. It is important that you ask your questions in the corresponding channel. All questions regarding the lecture material belong in the slide-questions channel while organizational and other question belong in general-questions.
The bot provides the ID for this question and the context if a presentation is running. If no presentation is running you can (and should) provide the correct context with the context commands in the thread: