Widow and Orphan Controll
How do I turn on the widow and orphan control in pages?
MacBook Air, macOS Sierra (10.12.6), null
Select the text. Click on the Format button on the top right to bring up the Format sidebar if it isn't already showing. Look for the Style/Layout/More switch at the top and click More. Then uncheck "Prevent widow & orphan lines." This applies to the text you have selected, so you can have it on for some paragraphs and off for others.