Section breaks give you the flexibility to customize how pages are numbered within each section, including restarting numbering or continuing from the previous section. To adjust page numbering, go to the Insert tab, click on the Page Number button, and choose 'Format Page Numbers.' In the dialogue box, you have options to start numbering at a specific number or continue from the previous section. This allows for seamless transitions in documents that require different sections to be differentiated or independently numbered.