Account Right invoice sequence

Can someone help please is there is a way in MYOB to prevent a deleted quote number, such as "Qoute 00018480," from becoming available again. I would like the sales order number to not be reused once it has been deleted.

Additionally, I would like to start the purchase order sequence from "00060000" so that the sales order and purchase order numbers are easily distinguishable. Is there a way to achieve this in MYOB?