Go to Admin tab and click Software Settings. Here you can:
1. Turn on or off the functionality of using Categories and Jobs.
2. Indicate to send the last 8 digits of your invoice/bill number to ARL in the Purchase Order number field when your bills are exported. If you select this box invitbox will ignore any PO number data extracted from a bill, or manually entered, and will replace it with the last 8 digits of the bill number.