Can somebody please explain to me how the wheel group is used. The documentation only state how to add or remove users. I have a user added to the wheel group. I can log in via ssh fine with this user with limited access as expected. I run su - (i've tried su, su - root, su root) and it asks me for a password. Neither my user password nor the root password work from this prompt. I know these passwords are correct as I can login to ssh with both accounts just fine. What am I doing wrong? Any help in this matter is greatly appreciated.