Data Approval for specific districts


I am try to implement data approval for some specific districts of a province. what I do is create a “Category option” for specific districts and then assign this “Category option” to a “Category option group” and then assign this “Category option group” to a “Category option group set”. Then I create a “Data approval level” for districts and assign that “Category option group set” to this “Data approval level”.
But when i check data approval for the district that which i didn’t select for approval. The data approval is also showing on these districts. I don’t know how to do this. Any please help.

Note: Data approval for all districts works fine but my task is to implement it for some districts not for all districts.

Can you please help. Anyone?