Which is the maxim of points subtracted if several offences are perpetrated simultaneously?

When several major or very serious offences are perpetrated on the same day, 6 (six) points will be subtracted at the maximum. However, if among the major or very serious offence convictions there are those of drive-drinking or drug-driving, it will be subtracted the corresponding points (3, 5 or 6 – depending if it is a major, very serious or road traffic crime offence).