When I change volume permissions it changes back

[Evelen]

To the left, I removed Owner and Other [v] in the checkboxes, but when I try to verify the changes by opening the windows again the configuration hase reset to what it was before.
Why? and how can i fix this.

 

[m0nkey_]

What type of dataset is this?

 

[Evelen]

It is a UNIX dataset