Panels

You can minimize and maximize a docking channel by clicking the drawer button

Panels allow you to change related items in a document.
Open/Close a panel
The panels can be opened from the Window menu
Panels not listed can be found under the Other Panels submenu

Panel Menu
Each panel has its own menu
Click the icon in the top right corner

Collapse and Expand Panel
Click the triangle on the header bar of the panel

Dock/Undock Panel
Click and drag the gripper.
The gripper is the group of dots on the top left of the panel
Drag the panel into a docking channel or out of a docking channel