Where can I find the menu to configure the inverter? | Legrand Belgique

For the correct selection of the output configuration, follow the instructions in Chapter 5 paragraph 5.5. / (*) Only available in "Service Mode" press the ENTER button to enter the menu. Use the UP ARROW and DOWN ARROW buttons to move the selection on the display; the ENTER button is used to confirm the selection and the ESC button is used to cancel the selection. Follow the path UPS settings  Output  Inverter Select "Three phase 120°" / "Three phase independent". / "Single phase" depending on the type of load and distribution downstream of the UPS.