How to auto populate specific Google Form fields, based on dropdown choice
<p>I use Google Forms regularly at work, and I think they are awesome, especially since I am a total newbie with coding. With a few good plugins for Forms and Sheets, I am able to generate contracts, invoices, and so on very easily, based on document templates.</p>

<p>To keep it short, here is my request:</p>

<ol>
<li><p>I have a form, where I input the customer's details, and upon submission, an addon generates a gdoc, based on a template. Al working great so far. My problem is that we are generating many different documents for a single customer, so it becomes a repetitive and very time-consuming task, considering that I have 15-20 different input fields for a customer, plus specific input fields for each different document.</p></li>
<li><p>The first input filed in my form is <code>"Customer Name"</code> and I have managed to create a dynamic dropdown list, that takes it's information from a specific column in a Google Sheet.</p></li>
<li><p>My request: how could I auto populate <em>specific</em> input fields in my Google Form, so that, based on my dropdown choice, the auto completed information will match the corresponding row present in the Google Sheet.</p></li>
</ol>

<p>I have attached 2 images for easier understanding:</p>

<p><img src="https://i.stack.imgur.com/PxkKL.png" alt="Form Example">
<img src="https://i.stack.imgur.com/fFdzV.png&lt;br" alt="Sheet Example"></p>