// Create custom user role

$result = add_role( 'client', __('Sales Person'),

array(
'read' => true, // true allows this capability
'edit_posts' => false, // Disallows user to edit their own posts
'edit_pages' => false, // Disallows user to edit pages
'edit_others_posts' => false, // Disallows user to edit others posts not just their own
'create_posts' => false, // Disallows user to create new posts
'manage_categories' => false, // Disallows user to manage post categories
'publish_posts' => false, // Disallows the user to publish, otherwise posts stays in draft mode
'edit_themes' => false, // false denies this capability. User can’t edit your theme
'install_plugins' => false, // User cant add new plugins
'update_plugin' => false, // User can’t update any plugins
'update_core' => false // user cant perform core updates
)