Here is an example AeriesNetConnections.config file that includes the connection to a sandbox database.
<?xml version="1.0" encoding="utf-8"?>
<AeriesNetConnections>
<DatabaseGroup id="Some School USD" Default="True">
<Year id="2016-2017" Default="True">
<Server><![CDATA[SQLSERVER]]></Server>
<Database><![CDATA[DST16000SomeSchoolUSD]]></Database>
<UserID><![CDATA[AeriesNetUser]]></UserID>
<Password><![CDATA[sqlpassword]]></Password>
</Year>
<Year id="2015-2016">
<Server><![CDATA[SQLSERVER]]></Server>
<Database><![CDATA[DST15000SomeSchoolUSD]]></Database>
<UserID><![CDATA[AeriesNetUser]]></UserID>
<Password><![CDATA[sqlpassword]]></Password>
</Year>
</DatabaseGroup>
<DatabaseGroup id="Sandbox">
<Year id="2016-2017" Default="True">
<Server><![CDATA[SQLSERVER]]></Server>
<Database><![CDATA[DST16000SomeSchoolUSD_sandbox]]></Database>
<UserID><![CDATA[AeriesNetUser]]></UserID>
<Password><![CDATA[sqlpassword]]></Password>
</Year>
</DatabaseGroup>
</AeriesNetConnections>
XML