The min. score value ist not editable.
Some lecturers use negative points for wrong answers to prevent the students from guessing..
Case 1: Method of assessment: = All correct answers --> Min. points editable --> implement this case for all question types, where there is a number for min. points available.
It will only be editable on the level of a question item, but not the whole test. the minimum for the whole test will stay at 0 and cannot be edited.
Do not implement Case 2: Method of assessment: = Score per answer --> Calculate min. and max. points based on the points per answer but still make them editable (in case lectures do not want to use negatve points globally)