Open Schematic View

Menu bar > Graph Editors > Schematic View > Open Schematic View

This command opens the current Schematic View window. This window floats on top of the interface and can be positioned wherever you like. The floating window does not dock.

You can change a viewport to a Schematic View by right-clicking the Viewport label and choosing Views > Schematic. Then select in the Schematic View window you wish to display in the viewport.