WPORG - Custom Forum Moderator Role see https://wordpress.slack.com/archives/meta-i18n/p1436133108000049 See also: https://gist.github.com/ocean90/e266ab5b675df4e4e463

wporg-custom-forum-moderator-role.php

<?php
/*
Plugin Name: WPORG - Custom Forum Moderator Role
Plugin URI: https://wordpress.slack.com/archives/meta-i18n/p1436133108000049
Description: WPORG - Custom Forum Moderator Role
Version: 0.0.1
Author: Stephen Edgar aka @netweb
Author URI: https://netweb.com.au
*/

function wporg_add_new_roles( $bbp_roles ) {
	/* Add a role called wporg_forum_moderator */
	$bbp_roles['wporg_forum_moderator'] = array(
		'name' => 'WordPress Support Forum Moderator',
		'capabilities' => wporg_custom_capabilities( 'wporg_forum_moderator' )
		);

	return $bbp_roles;
}

add_filter( 'bbp_get_dynamic_roles', 'wporg_add_new_roles', 1 );

function wporg_add_role_caps_filter( $caps, $role ) {
	/* Only filter for roles we are interested in! */
	if( $role == 'wporg_forum_moderator' )
		$caps = wporg_custom_capabilities( $role );

	return $caps;
}

add_filter( 'bbp_get_caps_for_role', 'wporg_add_role_caps_filter', 10, 2 );

function wporg_custom_capabilities( $role ) {
	switch ( $role ) {

		/* Capabilities for 'wporg_forum_moderator' role */
		case 'wporg_forum_moderator':
			return array(
				// Primary caps
				'spectate'              => true,
				'participate'           => true,
				'moderate'              => false,
				'throttle'              => false,
				'view_trash'            => false,

				// Forum caps
				'publish_forums'        => true,
				'edit_forums'           => true,
				'edit_others_forums'    => true,
				'delete_forums'         => true,
				'delete_others_forums'  => true,
				'read_private_forums'   => true,
				'read_hidden_forums'    => false,

				// Topic caps
				'publish_topics'        => true,
				'edit_topics'           => true,
				'edit_others_topics'    => false,
				'delete_topics'         => false,
				'delete_others_topics'  => false,
				'read_private_topics'   => true,

				// Reply caps
				'publish_replies'       => true,
				'edit_replies'          => true,
				'edit_others_replies'   => false,
				'delete_replies'        => false,
				'delete_others_replies' => false,
				'read_private_replies'  => true,

				// Topic tag caps
				'manage_topic_tags'     => false,
				'edit_topic_tags'       => false,
				'delete_topic_tags'     => false,
				'assign_topic_tags'     => true,
			);

			break;

		default :
			return $role;
	}
}