Configuration Settings
Charge checks for several config settings in system/user/config/config.php.
Data Export Configurations
Sales data in CSV format can be downloaded from the control panel. Date limits on the export can be set using two configuration variables:
$config['charge_export_start'] = '1 month ago';
$config['charge_export_end'] = 'now';
If you specify one of the export dates, you must specify both. Acceptable values include any input that an ExpressionEngine Date field would accept. This means you have a wide variety of options:
start_on="October 21st, 2015 4:30 PM"
start_on="today"
start_on="yesterday"
start_on="last Monday"
start_on="-2 months"