In Gen 3, How to set file system level permissions for using the "FS Native Action call"?

Summary:

I am investigating file system level permissions in gen3 SFTP server.
When using FTP connector to connect to the local SFTP server permissions work as expected.
When using the FS Native action, it seems to ignore any permissions I set and grant read/write/delete access to any user who has access to that instance.

I want to make sure only certain users/groups have access to files they need. Am I missing something??

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Version (include the version you are using, if applicable):

Gen 3.

Code Snippet (add any code snippets that support your topic, if applicable):