I have created a component and inside it have a text and a multifield with text. in the .html it shows the text components as a title component and in this way allows users a more personalized management once it is displayed in edit mode if they wish. this is the .xml of my component:
If we have subcomponents inside a multiple field, we need to create a component container with an empty cq: design_dialog (this allows to be a child element, otherwise the component will be a child at the root and not in the parent) and an html file to display the component.
This is the example to solve my problem.
Primary component: call to title and child container component