I am creating my first soccer field illumination. Despite the fact that this appears to be a lot more complex than the usual room or street illumination project, I had no problem until I started installing the floodlights. I tried to browse the DIALux helpfiles but I just can't find the detailed info I need. Searching the net didn't help either : a lot of stuff about room or street illumination, very few about soccer fields, and certainly not at the grass root level

Example of my first hurdle: what do all the handles and arrows attached to the floodlight mean ? Without understanding this, I can't really move forward !
Any suggestion welcome, (English, Deutsch, Français OK)
Thank you