In the Starting cheque no. field, enter the cheque number of the first cheque in the printer. The cheque number is found to the right of the account number at the bottom of the cheque.
Select Preview and print. If everything is correct, select Print.
If your cheques printed OK, select Done.
Here's an article with more info on printing cheques: How to print cheques. To make sure we're on the same page, please elaborate on what you mean by adding a new of cheques. Are these expense cheques?
For direct assistance, I recommend contacting our support team using this link.