Improve POS Existing Functionalities

Additional Details: POS has been neglected a lot over the last couple of years and is a very basic system.  However we do have clients that whilst they need the Cin7 for inventory, 3PL, B2B, etc they still have a bricks and mortar store and they find that the POS fall shorts.

To be Improved based on client's feedback:
- payments on account
- deposit workflow (created from backend and take payment on POS)

if that sale has been set up in the back end as an on account file, you can't find that on the POS
you only put it back like a comment on the backend and push it, push it across to Xero as a deposit and then reverse it. Once the full payment has been received. that cannot be managed in the point of sale. So we always advise clients to use the back end But then the problem with the back end is that they cannot integrate in payment. 

- sales through back end aren't captured with Marsello
- no integration to Tyro with back end
- promotions engine (Eden Gardens) Went with Vend A+B Get Y, Mix Products Promo
- no permissions around changing prices only by maximum % discount (TKD Lingerie)
- look and feel needs a facelift
- no option to cancel cash sale if cash button hit in error and customer is paying by card.
- if till discrepancy the discrepancy doesn't flow through in the register closure and there is no report available to show the discrepancy in Xero