The answer to this will highly depend on the structure of your WordPress theme.

- Some WordPress themes use a standard page without or without custom fields.
- Some themes use a widget based home page, which would require the user to make changes via the widget area of WordPress.
- Other themes may use a page builder, so you would need to access this add-on to make modifications and/or additions.

I would suggest you reach out to the developer of your WordPress template and/or visit their support forum and documentation to learn more about the specifics of your template.