You can move and resize windows to help you work more efficiently. In addition to the dragging behavior you might expect, GNOME features shortcuts and modifiers to help you arrange windows quickly.
Move a window by dragging the titlebar, or hold down
Resize a window by dragging the edges or corner of the window. Hold
down
You can also resize a maximized window by clicking the maximize button in the titlebar.
Move or resize a window using only the keyboard. Press
Maximize a window by dragging it to the top of the screen. Drag a window to one side of the screen to maximize it along the side, allowing you to tile windows side by side.