Windows Security Group

Morning \ Afternoon all -

We have a Security Group for our support staff, called 'TechSupport'. If a member of the TechSupport group creates a directory on the file server (running Windows 2012), then you check Properties \ Security, it adds the actual tech username to security as themselves. Whereas, since they are part of TechSupport, it shouldn't add them.

I'm a Domain Admin, and it doesn't add my actual account.

I'm trying to figure out how to prevent the techs personal account from being added to the security section. Any ideas? Can you help?

Thanks

Ivan