To access Dubbing Studio, you first need to create a Dubbing project.
To do this, create a new Dubbing project, making sure to select the Create Dubbing project option.
It's not possible to convert an existing automatic dub to a Dubbing project.
The Dubbing project will appear at the top of your list of dubbing projects, and will go through various stages while generating.
Once it has completed processing, click the three dots icon and select Edit to open your dubbing project.
For more information about Dubbing Studio, please see our overview.