Keyboard remapping is done through AnzioWin. While Anzio Lite does not support remapping itself, it can use a remapped keys file. So you would need at least one copy of AnzioWin to do the remaps and then distribute the modified key file to the Anzio Lite users.
AnzioWin key remapping is done similar to setting up macros. See our various support documents and knowledgebase articles for more information.