On the Wordpress post screen there are a number of meta boxes which give you options to attach to the post. For example you can change:

• Categories
• Tags
• Featured Images
• Excerpt
• Trackbacks
• Custom Fields
• Discussion
• Slug
• Author
• Revisions

If you have a multiple authors on your blog then you might want to disable some of the post meta boxes to anyone other the administrator. For example you wouldn't want a guest author to disallow the comments or trackbacks on the article, this should be up to the administrators of the site. To remove a meta box there is a Wordpress function remove_meta_box().

<?php remove_meta_box( $id, $page, $context ); ?>

This function takes 3 parameters - Meta box ID

• Post type the box is on
• Context of the box

The default meta boxes you can remove are: - 'commentstatusdiv' - Comments status metabox (discussion).

• 'commentsdiv' - Comments metabox.
• 'slugdiv' - Slug metabox.
• 'revisionsdiv' - Revisions metabox.
• 'authordiv' - Author metabox.
• 'postcustom' - Custom fields metabox.
• 'postexcerpt' - Excerpt metabox.
• 'trackbacksdiv' - Trackbacks metabox.
• 'postimagediv' - Featured image metabox.
• 'formatdiv' - Formats metabox.
• 'tagsdiv-post_tag' - Tags metabox.
• 'categorydiv' - Categories metabox.
• 'pageparentdiv' - Attributes metabox.

If you want to disable these for all users which are not admin user then you can use the following code snippet.

if (is_admin()) :
function remove_post_meta_boxes() {
 if(!current_user_can('administrator')) {
  remove_meta_box('tagsdiv-post_tag', 'post', 'normal');
  remove_meta_box('categorydiv', 'post', 'normal');
  remove_meta_box('postimagediv', 'post', 'normal');
  remove_meta_box('authordiv', 'post', 'normal');
  remove_meta_box('postexcerpt', 'post', 'normal');
  remove_meta_box('trackbacksdiv', 'post', 'normal');
  remove_meta_box('commentstatusdiv', 'post', 'normal');
  remove_meta_box('postcustom', 'post', 'normal');
  remove_meta_box('commentstatusdiv', 'post', 'normal');
  remove_meta_box('commentsdiv', 'post', 'normal');
  remove_meta_box('revisionsdiv', 'post', 'normal');
  remove_meta_box('authordiv', 'post', 'normal');
  remove_meta_box('slugdiv', 'post', 'normal');
 }
}
add_action( 'admin_menu', 'remove_post_meta_boxes' );
endif;