Add tab functionality to a pos

I have a Pos system and I need to add some functionalities, such as:

Create multiple tabs for multiple independent sales

Keeping the functionalities I already have(apply discounts add product quantities etc).

Save the sale into indexedDB before DB

Correct calculation of the stock between tabs and refresh when an order is saved in the database

And the sale number must be consecutive after the sale is saved in database.

Skills: PHP, MySQL, JavaScript, HTML, jQuery

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About the Employer:
( 1 review ) Cuernavaca, Mexico

Project ID: #29901753

13 freelancers are bidding on average $133 for this job


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