How to set form select element options in page?

The CMS Questions
6

Changed event.yml blueprint to this:

sections:
  content:
    type: fields

<…>

      group:
        width: 1/2
        label: Grupės
        type: checkboxes
        options:
          - First group (value)
          - Second group (value)
          - Third group (value)
          - Fourth group (value)

So now gruops are saved as value (not as machine name). Only not sure if it’s the best solution, I mean maybe would still need machine names in future.