Creating a new project in Translate (Pro)

Give your project a name and press Create.

By default, Last used settings template will be selected. 

 

You can select a different settings template according to your project requirements.

The editor will open. It will have two columns.
The left one is for source subtitles (master template), on the right - your target language. This is where you can type your translation. 

To import the master template, go to Import/Export > Import and select your master template file.
Alternatively, you can just drag and drop it into the browser page.