Cycle Counting - Class D - How to count only 50% of items in Class D

Hello gurus,

We have a Cycle Count scheduled to count the following items for the year.

Class A: count per year 18

Class B: count per year 6

Class C: count per year 3

Class Count per year 0.

In my Class D, I have 20000 items. I would like to count randomly only 50% of these items from the Class D. I do not want to count all items from Class D.

Could you tell me where is the right setup so that randomly only 10000 items (50% of 20000 items from Class D) are now being counted every day?

If I add 0.5 in the Count per year field for Class D, does it mean it will take 50% of the items in Class D?