From the plugins tab, pick Phrase, it'll ask you for your phrase user name and password, make sure the user has a Project Manager role.

What's being translated:

• All text elements in builder content [you can exclude specific element by right click + exclude from future translations]
• All custom fields in content that are marked as localized
• All custom components inputs that are marked as localized

How To translate?

• once done with preparing content, publish it, and press the triple dots options menu on the top right of the editor:

Then click Translate

• it'll ask you for the source language and target languages and create a project in phrase with those configuration.
• once the project is completed, press on Apply Translation to get the translated values into your content.
• You can at any time restart the process by pressing on Reset Translation.

Future work:

• Automating the translation application on content once a project is completed in phrase.