It seems to only ask for root's password when there aren't any users in the admin group. When logged in with a user without sudo privileges, it asks for another user's password who does have permission (rather than root's). Therefore, I don't think there is a problem. Thanks for your responses.
It seems to only ask for root's password when there aren't any users in the admin group. When logged in with a user without sudo privileges, it asks for another user's password who does have permission (rather than root's). Therefore, I don't think there is a problem. Thanks for your responses.