The Set Next Engine Window Position action allows you to specify where the next Keyboard Maestro Engine window will be placed. This applies to pretty much any window, such as text displays.
This allows you to specify the position of windows that would otherwise appear in a predefined spot.
You can also move windows with the Manipulate a Window action or with AppleScript after they are created, but this action allows you to set their position before they are created.
Actions that have Place Under Mouse will override this facility.
Note that this currently (v11.0.4) does not work with the Clipboard History Switcher.
You cannot set the location of the Window Switcher or Application Switcher/Launcher.