samechadra

I just tried this plugin and let you add fields for specifics pages, parent pages, custom post types:

https://plugins.elliotcondon.com/advanced-custom-fields/

creativepickle just type this code on to your functions.php,

thanks to @joetheboss and the information here: https://farinspace.com/multiple-wordpress-wysiwyg-visual-editors/

// important: note the priority of 99, the js needs to be placed after tinymce loads
add_action('admin_print_footer_scripts','my_admin_print_footer_scripts',99);
function my_admin_print_footer_scripts()
{
	?><script type="text/javascript">/* <![CDATA[ */
		jQuery(function($)
		{
			var i=1;
			 $('.verve_meta_box_content textarea').each(function(e)
			 {
			  var id = $(this).attr('id');
			  if (!id)
			  {
			   id = 'customEditor-' + i++;
			   $(this).attr('id',id);
			  }
			  tinyMCE.execCommand('mceAddControl', false, id);
			 });
		});
	/* ]]> */</script><?php
}