Custom unit addition based on given extension

Hello I am Programming expert and interested in this project. I have reviewed the details and confident to handle the project perfectly. I will keep codes simple and well documented. Please communicate to discuss further. Regards Anshu

Hello, Could you further clarify on what it exactly is that you need by updating the project description? I may be able to do this project if I can figure out what it is exactly about. First off, what does this "extension" refer to. My guess is that you have an existing site and want a parameter in the url that says something like "&product-batch-size=5" and then on your site a button that adds/substract 5 products at a time / only submits if the product count field is cleanly dividable by 5? Also the project is listed as both C# and PHP, is there an existing site you need altered or do you need a new one build. If you already have one it would be quite unusual to need both C# and PHP. My apalogies if I come accross as rude, I'm just trying to determine what you exactly want doing :).