You'll then be asked which audio you'd like to record.
Computer: This is great if you only want to caption media coming from your computer; such as a YouTube video or online lecture.
Microphone: This is ideal if you want to transcribe an in-person meeting, research interview, or lecture, but don't want your computer audio to be included in the transcription.
Computer + Mic: This is recommended if you want to caption both your computer and microphone audio; such a virtual meeting or interactive learning session. (Captioning a virtual meeting (Zoom, Teams, etc).
Next, you can also select the Subject or Language of the captions. There are a number of different languages to choose from, as well as a selection of custom English dictionaries that focus on specialist subjects.