Can not remove someone's access to a folder

Problem:

Can not remove webmaster's access to folder 'Sarah'. The error message is

'You can not remove Webmaster because this object is inheriting permissions from its parent. To remove Webmaster, you must prevent this object from inheriting permissions. Turn off the option for inheriting permissions, and then try removing Webmaster again.'

Solution:

Right-click folder 'Sarah', choose Properties. Click tab 'Security'. Click 'Advanced'. Click 'Change permissions'. Clear the tick against 'Include inheritable permissions from this object's parent'. Click 'Remove'.

Now you can remove webmaster's access to folder 'Sarah'.