When you position the pointer over dividers between panel groups, resize icons appear. When you drag these icons, all groups that share the divider are resized. For example, suppose your workspace contains three panel groups stacked vertically. If you drag the divider between the bottom two groups, they are resized, but the topmost group doesn’t change.
To quickly maximize a panel beneath the pointer,
press the tilde (~) key. (Do not press Shift.) Press the tilde key
again to return the panel to its original size.