You can use the Text-to-Speech tool for any existing workflows.
- Navigate to the editor and select an existing published workflow
- Unpublish that workflow
- Select the ellipsis (...) and select Reset workflow
- Select Keep a copy of this Workflow. This is a good practice to keep a copy incase you want to return to the original
- Now you can edit your reset workflow and use the Text-to-Speech tool. Read our article to learn how to use Text-to-Speech