When the salt symbol is red, it means the machine needs salt. Remove the bottom drawer from the machine, unscrew the black cap on the right on the bottom of the machine and screw in the white plastic salt container containing two kilos of salt (the container and salt are kept in the cupboard ander the left hand sink). Start the machine with the symbol 1-0 and press the salt symbol on the far right. This cycle takes about an hour.
Don't put large plates at the front of the lower rack - they stop the soap container from opening properly.
Do use the extra shelf in the upper rack for cups.
If there is not much cutlery, put it all in one basket and remove the other one.
Do use the lowest setting possible - in most cases the minimum is sufficient (and faster).
DO NOT under any circumstances open the machine while it is running. It does not automatically continue from where it was (as most domestic dishwashers do), but has to be manually restarted from the beginning!