Newbie: Installing a plugin

I’m a total newbie and I hope you don’t mind stupid questions:

I have installed KirbyCMS locally and put the kirby-content-translator plugin into the plugins directory. I tried to follow this installation guide, but I am unsure what to do here: GitHub - johannschopplich/kirby-content-translator: 🌐 Kirby Panel plugin to translate content at once with DeepL or other services

It seems that I am supposed to edit blueprints in site/blueprints, but there are man. i.e.

Which one am I supposed to edit in order to make the translation functionality appear in the panel? Or am I totally off?

You need to add it in any page blueprint where you want this functionality. Start with one, e.g. note.yml for testing.

Note to self and people with the same issue:

It wasn’t working properly for me, until I realized, I had to indent the sections block properly (i.e. twice) inside the blueprint.

    sections:
      contentTranslator:
        type: content-translator
        # Define field names which should be synced from the default language to other languages
        syncableFields:
          - text
          - description
          - tags
        # Define field names that should be translated
        translatableFields:
          - text
          -textarea
      - description```