Click onĀ New Project.
Give your project a name and pressĀ 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.