So we have developed this feature.
In below screen we are providing facility to enter values for sequence Prefix, Suffix, Separater, etc.
After defining your own sequence, now rest of the steps are same as normal Point of Sale.
Please check following screens to see the generated sequence as per your requirement.
Now lets start selecting products .
Now we are going to make payments.
Here is the receipt in which we can see generated sequence number as we defined.
With one more feature you can see is, customer’s address, phone number, etc.
This is another receipt we have generated to see the sequence.
Please find this video to get more idea.