Commisioning a new Multiplus 2 inverter using cerbo with touch screen and 500A smart shunt

Can you plesae send me a link explaining how to commission a new Multiplus 2 inverter using Cerbo with touch screen. Or MUST I use a MK3 to USB converter? (Installation is in a boat / marine with lead acid batteries 400Ahr). PS I have down loaded lots of manuals and watch lots of videos but just can not find it.Thank you Martin