Use the following procedure to roles for a user. Roles are defined via Setup > Security > Roles.
1. Select Users from the Security section of the Setup menu. The List of Users grid is displayed.
2. If necessary, search for a user by entering the full name of the person or entering at least one letter of the last name or first name and then clicking Search.
3. Click View User next to a user. The Users page is displayed.
4. Access the Roles tab.
5. To add a role for the user, select the appropriate role from the Available Roles list and click Add. The role is displayed in the Selected Roles list.
To remove a role assigned to the user, select the role in the Selected Roles list and click Remove. The role is removed from the Selected Roles list and is displayed in the Available Roles list.