Adding voice input to default callin.io chatbot

I have a callin.io workflow and have embedded the callin.io chatbot on my website to access it. Everything works great, but I want to be able to speak to it for interaction, in addition to using the text input. For clarity, I don’t want a voice-only agent (e.g., 11labs). I just want flexibility in input. I’ve tried modifying the callin.io chatbot code but can’t figure out how to make it work. Any help would be appreciated!