When working with a structure on the Structure Board, you can switch to the two-panel mode to take full advantage of the screen space.

While the left panel always displays the structure widget or search, the right panel can open any of the following:

Viewing the Secondary Panel

To open the Secondary panel, use the Toggle Panels menu in the Main Structure Toolbar.

You can select from the following options:

Resizing the Secondary Panel

You can divide the horizontal space between the secondary panel and the main panel by dragging the separating border.