Справка LibreOffice 7.5
Promotes the list level of a list paragraph where the cursor is located and its subpoints to the next list level. Multiple list paragraphs can be selected. Promotes the outline level of a chapter heading where the cursor is located and all its subheadings to the next outline level. This command is active only when the cursor is positioned in a list paragraph or chapter heading.
Повысить уровень структуры с подпунктами