Publish Target Groups adds the ability to group publishing targets within Sitecore to aid Content Editors publishing tasks, where multiple publishing targets exist.
The module adds the following setting into the web.config to allow setting default Publish Target Groups:
<!--
DEFAULT PUBLISH TARGET GROUPS
This settings defines the default publish target groups
-->
<setting name="DefaultPublishingTargetGroups" value="" />
For projects using Sitecore versions prior to v7.2, then build from the 'v7.1' tag.