I have already developed website in nodejs and MySQL

Now my client wants to add payment functionality. We have lots of features in the website like:-

1) Copy

2) Save

3) Delete

4) Groups

5) Read, and many more.

We have a different package for each feature. I am not sure how to manage this? Can anyone tell me what will be the best approach to do this?

closed as unclear what you're asking by Danny Schoemann, Mark C. Wallace, Marv Mills, Todd A. Jacobs, Mark Phillips Sep 18 '16 at 15:21

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • Are you asking for a design? Or for PjM advice. If the former it's off topic, if the latter we need more info on your team and structure. – Danny Schoemann Sep 15 '16 at 7:45

Assuming you want PjM advice (as per your tags):

What you are describing is called a change request.

You need to:

  • Define exactly what the client wants - this is documented as a change request that the client signs off on.
  • Decide how to price it
  • Write a Technical Spec including the design changes and the GUI elements needed.
    • Review existing design to see what else will be affected and include it in the Technical Spec.
  • Figure out the tasks, create a schedule and then track, implement, test and ship.

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