Docking and Resizing Windows
From LibreOffice Help
You can dock, undock and resize most LibreOffice program windows such as the Navigator or the Styles and Formatting window.
- To dock or undock the Navigator or the Styles and Formatting window, hold down the
Ctrlkey and double-click on a gray area in the window. Alternatively, press
- To resize the window, drag a corner or an edge of the window.