Template:Collapsible sections option

How to manage this template's collapsible groups/sections option

This template uses {{Navbox with collapsible groups}}. When a page that transcludes it is displayed, one of its groups/sections may be set to be expanded (visible) while the others remain collapsed (hidden apart from their titles). To achieve this, use {{[Template's name] |group/section}}, where group/section is one of the following names identifying the groups/sections (omit any speech or quote marks):
{{{list}}}

[ optional: ] For example: {{[Template's name] |{{{example}}}}}

[ optional: ] The group/section named {{{default}}} has been set to be shown when the template appears.