You can globally control the behavior of your eTASK product by changing configuration parameters via the system configuration (Control Panel - Portal Options - Portal Administration - System Configuration).
ORDER_NUMBER_FORMAT:
Controls the composition and layout of the order number.
G-MMYY-XXXX = [Company number]-[two-digit month][two-digit year]-[four-digit sequential number]
G-YYMM-XXXX = [Company number]-[two-digit month][two-digit year]-[four-digit sequential number]
G-YYYY-XXXX = [Company number]-[four-digit year]-[four-digit sequential number]
G-YY-XXXX = [Company number]-[two-digit year]-[four-digit sequential number]
G-YY-XXXXX = [Company number]-[two-digit year]-[five-digit sequential number]
G-KST-YYYY-PKL-PMA-XXXX = [Company number]-[Cost center number]-[Four-digit year]-[Budget project number]-[Budget item number]-[Four-digit sequential number]
G-XXXXXX = [Company number]-[six-digit sequential number]
A-XXXXXX = [Department number]-[six-digit sequential number]