In the body of the vSphere Client page is a panel section. In most views, there is a left and a right panel: the Inventory panel and the Information panel.

These panels can be resized.

Inventory panel

Displays a hierarchical list of vSphere objects when an Inventory or Maps view appears.

Information panels

Display lists and charts. Depending on the navigation items or Inventory item selected, the Information panel is divided into tabbed elements.