By default, when you create a new dub, our latest Dubbing v2 model will be used. Dubs created using the v2 model are completely automatic without any option to edit the content.
The edit button is only available when using Dubbing Studio, which is only available for our legacy v1 Dubbing model. To use Dubbing Studio, you will need to select Use legacy v1 Dubbing model in the Advanced options when you create your dub, then check the Create Dubbing project option.
Note: Dubbing Studio is in maintenance mode and receives critical bug fixes only.