Add a new block to the Footer - Dawn theme used

Hi Joan, like @Zens has written in his comment above, insert the code directly after:

{% schema %}
{
  "name": "t:sections.footer.name",
  "blocks": [

Or just simple copy the following schema section and change it in your footer.liquid:

{% schema %}
{
  "name": "t:sections.footer.name",
  "blocks": [

  /* Stefan: Added for custom HTML in footer */
  {
    "name": "custom liquid",
    "type": "custom_liquid",
    "settings": [

    {
      "type": "text",
      "id": "heading",
      "default": "Custom Liquid",
      "label": "t:sections.footer.blocks.text.settings.heading.label"
    },

    {
    "type": "liquid",
    "id": "custom_liquid",
    "label": "t:sections.custom-liquid.settings.custom_liquid.label",
    "info": "t:sections.custom-liquid.settings.custom_liquid.info"
    }
    ]
    },

    /* Stefan: END */

    {
      "type": "link_list",
      "name": "t:sections.footer.blocks.link_list.name",
      "settings": [
        {
          "type": "text",
          "id": "heading",
          "default": "Quick links",
          "label": "t:sections.footer.blocks.link_list.settings.heading.label",
          "info": "t:sections.footer.blocks.link_list.settings.heading.info"
        },
        {
          "type": "link_list",
          "id": "menu",
          "default": "footer",
          "label": "t:sections.footer.blocks.link_list.settings.menu.label",
          "info": "t:sections.footer.blocks.link_list.settings.menu.info"
        }
      ]
    },
    {
      "type": "text",
      "name": "t:sections.footer.blocks.text.name",
      "settings": [
        {
          "type": "text",
          "id": "heading",
          "default": "Heading",
          "label": "t:sections.footer.blocks.text.settings.heading.label"
        },
        {
          "type": "richtext",
          "id": "subtext",
          "default": "

Share store details, promotions, or brand content with your customers.

",
          "label": "t:sections.footer.blocks.text.settings.subtext.label"
        }
      ]
    },
    
    {
      "type": "image",
      "name": "Image",
      "settings": [
        {
          "type": "image_picker",
          "id": "image",
          "label": "Image"
        },
        {
          "type": "range",
          "id": "image_width",
          "min": 50,
          "max": 200,
          "step": 5,
          "unit": "px",
          "label": "Image width",
          "default": 100
        },
        {
          "type": "select",
          "id": "alignment",
          "label": "Image alignment on large screen",
          "options": [
            {
              "value": "",
              "label": "Left"
            },
            {
              "value": "center",
              "label": "Center"
            },
            {
              "value": "right",
              "label": "Right"
            }
          ],
          "default": "center"
        }
      ]
    }
  ],
  "settings": [
    {
      "type": "select",
      "id": "color_scheme",
      "options": [
        {
          "value": "accent-1",
          "label": "t:sections.footer.settings.color_scheme.options__1.label"
        },
        {
          "value": "accent-2",
          "label": "t:sections.footer.settings.color_scheme.options__2.label"
        },
        {
          "value": "background-1",
          "label": "t:sections.footer.settings.color_scheme.options__3.label"
        },
        {
          "value": "background-2",
          "label": "t:sections.footer.settings.color_scheme.options__4.label"
        },
        {
          "value": "inverse",
          "label": "t:sections.footer.settings.color_scheme.options__5.label"
        }
      ],
      "default": "background-1",
      "label": "t:sections.footer.settings.color_scheme.label"
    },
    {
      "type": "header",
      "content": "t:sections.footer.settings.header__1.content",
      "info": "t:sections.footer.settings.header__1.info"
    },
    {
      "type": "checkbox",
      "id": "newsletter_enable",
      "default": true,
      "label": "t:sections.footer.settings.newsletter_enable.label"
    },
    {
      "type": "text",
      "id": "newsletter_heading",
      "default": "Subscribe to our emails",
      "label": "t:sections.footer.settings.newsletter_heading.label"
    },
    {
      "type": "header",
      "content": "t:sections.footer.settings.header__2.content",
      "info": "t:sections.footer.settings.header__2.info"
    },
    {
      "type": "checkbox",
      "id": "show_social",
      "default": false,
      "label": "t:sections.footer.settings.show_social.label"
    },
    {
      "type": "header",
      "content": "t:sections.footer.settings.header__3.content",
      "info": "t:sections.footer.settings.header__4.info"
    },
    {
      "type": "checkbox",
      "id": "enable_country_selector",
      "default": true,
      "label": "t:sections.footer.settings.enable_country_selector.label"
    },
    {
      "type": "header",
      "content": "t:sections.footer.settings.header__5.content",
      "info": "t:sections.footer.settings.header__6.info"
    },
    {
      "type": "checkbox",
      "id": "enable_language_selector",
      "default": true,
      "label": "t:sections.footer.settings.enable_language_selector.label"
    },
    {
      "type": "header",
      "content": "t:sections.footer.settings.header__7.content"
    },
    {
      "type": "checkbox",
      "id": "payment_enable",
      "default": true,
      "label": "t:sections.footer.settings.payment_enable.label"
    }
  ],
  "default": {
    "blocks": [
      {
        "type": "link_list"
      },
      {
        "type": "text"
      }
    ]
  }
}

{% endschema %}