The standard setting of how many points you get on a task is 1 point per correct answer. In some formats, for example in Move paragraph, the standard is a little different. If you have 5 paragraph to move you get a total of 4 points, the rule is the number of paragraphs minus 1. 

You can choose to give some tasks more or fewer points. Click on Weighting. 

Choose weight on each task by using arrow up or down. In the column for Weight the numbers give following points:

0= 1 point

1= 1 point

2= 2 points

3= 3 points and so on.

Click on Weighting and Save when you are done.