Load distribution 7.5-ton

I have a question about loading / load distribution for “7,5-tons” – I’ve been searching through the complete Internet 5 times and can’t find a diagram from which I can take this: A (example) MB Atego 818 with case structure is to be loaded with pallets of 235kg each and then unloaded individually from different customers. Can I (only weight technical!) always simply unload the next one at the back until the thing is empty, or must I at some point left x pallets direction Shifting the rear axle in order to be able to meet the permissible axle loads? Otherwise – if someone could give me roughly the maximum loads per load meter (if the load is parted) this would be very helpful 😉 Many greetings & thanks already!