Adding new sections to CV when using rendercv

[mckzmyers]

I want to add different sections to my CV using rendercv, such as "Students Mentored". I am having trouble figuring out the right way to do this. When I add a block of code like the following to _data/cv.yml:

    Selected Talks:
      - name: "Test Talk"
        url: test.com
        date: 2026-06-08
        summary: test

    Students Mentored:
      - name: "Student"
        start_date: 2024
        end_date: present
        date: 2024
        summary: "test"

    Service and Outreach:
      - name: "Name of the activity" 
        description: "A short description of what you did"
        date: 2025
        summary: ''

    References:
      - name: "Professor Name"
        description: "Department, University"
        date: 2024
        summary: ""

this is how it actually looks:

As you can see, only the section header appears, with none of the content. I would appreciate any help with this. I'm also not sure which fields (name, description, etc.) I can/should use for each CV section I'm trying to add.