Ajuda del Collabora Office 21.06
To move a numbered or bulleted paragraph down one chapter level, click at the beginning of the paragraph, and then press Tab.
To move a numbered or bulleted paragraph up one chapter level, click at the beginning of the paragraph, and then press Shift+Tab.
Per inserir una pestanya entre el número o la bala i el text del paràgraf feu clic al començament del paràgraf i premeu OrdreCtrl +Tab.