|Cross Reference: for more detail about levels of permission on a Joomla! site see, Controlling user access to a Joomla! Site|
The User:[new] management page allows you to enter the details. To the left you enter the name and user name, as well as selecting the Group for the user. To the right there are options for other choices, including different editors. So you can make different choices for different users. If nothing is chosen under Parameters, then the Global choices will be used.