Greetings @JenniferGrossma ,
Thank you for posting on the Instructure Community!
Doing some research, it appears Voice Thread is a separate, third-party product that isn't part of Canvas Studio. That being said, it might be best to check in with your Instructor (if you're a student), or with your institution's I.T. department for more information, as they would likely be the ones that implemented this app into Canvas.
I apologize that this isn't a direct answer to your question, however I hope this helps!
- Noah
