Turker YILDIRIM

This plugin imports BuddyPress groups with their settings from a CSV file. It also supports <a href="https://wordpress.org/plugins/bp-group-hierarchy/" rel="ugc">BP Group Hierarchy</a> plugin. 
Preapare CSV file, select bulk settings if needed and then click import. That’s all, enjoy.
Features:
<ul>
<li>Possible to enable group forum</li>
<li>Possible to select group status</li>
<li>Possible to select group invite status</li>
<li>Possible to override CSV settings from admin page</li>
<li>BP Group Hierarchy plugin support</li>
<li>Possible to select parent group</li>
</ul>
<h3>License</h3>
Released under the terms of the GNU General Public License.

BuddyPress Groups Import

Import groups from CSV file into BuddyPress.

Yudhistira Mauris

This plugin helps you create a series of posts. It creates a new taxonomy named ‘series’ (can be modified via filter, see FAQ). There is no setting needed for this plugin. Once it is installed, assign posts you want to group as a series via post editor.
The plugin also creates a posts navigation on posts that belong to a certain series. See screenshots for the examples.

Easy Post Series

Works beautifully and doesn't have a sucking frontend design, as other similar plugins do!

BuddyPress Groups Import vs Easy Post Series