This tutorial walks through the steps necessary to crawl SharePoint 2013 using the SharePoint 2013 connector.
The status will show RUNNING while the crawl is going, and Completed when it is finished.
If there are errors, you will get a clickable "Error" flag that will take you to a detailed error message page.
Group expansion configuration is done under "Group Expansion" in the Connector tab. Group expansion scheduling is done in the General tab.