One of the best automatic numbering I found and use is based on time.
Choice should be given between
Timestamp is best for many situations (if not all)
Personal sequence is great when you have several business under the same brand and accounting system. Example :
So far I do it all manually, but having those as alternative choices would help a lot and protect against manual mistakes
Having append/prepend personal sequence is optional but seems logical since we can have multiple businesses (many of us will use it to separate activities in one business I think).
thank you for this feature request, will take it into consideration for future Nutcache updates.
The Nutcache Team
You can achieve it by using a combination of the smart auto numbering in place and create companies / organizations.