Looking for help with input boxes

Hi,
I'm brand new to these forums so tell me kindly if I'm doing something wrong and I'll do whatever I can. Thanks.

I have code which creates a graph using data and repeats this for each sheet.

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What I'm really interested in is creating a basic user input box which will take the information given and write it into the above code. That is, I need a dialogue box in which the user can set the size, location, ranges etc. of the chart code.

What I've found so far only takes user input and writes it into sheet cells, not the vbcode. Is this possible with macros? Where would I start?
Thank you for anything at all~

Thank you for your reply.
I found the inputbox a bit limiting because it could only accept one value at a time, while I was hoping for a panel of options. I'm looking at userforms now and they seem to do the trick, and I see how to use your code for them as well. I'm also following existing tutorials to figure them out, so I have no immediate questions.

Thank you very much for putting me on the track~