How to add one line to a google sheet based on user response?

Hi, is it possible to add a line to a google sheet based on user input.   For example if I am collecting information from one user i may want to update multiple spreasheets.  If the item is not in our product catalogue, based on the user input I would like the user to have the option to add it, and once they do to move on to the next thing without having to enter the information again.

Yes, that's possible. You can add another field for the option that is not in your list and display it based on user response (it will automatically be added in the google sheet).

Guide: How-to-Show-or-Hide-Fields-Base-on-User-s-Answer

And if you want to copy or clone the answers in other fields, you can achieve that using conditional logic.

Please refer to this guide: How-to-Insert-Text-or-Calculation-into-a-Field-Using-Conditional-Logic

Let us know if you are referring to something else.

Can you show me an example of how that is done.
For example we are asking the user
Name: Joe
Car Make: Ford
Car Model: Escape
Car Year: 2012
Car Colour: Red

--- at this point I want a google sheet to update increase the number of fords escapes by 1

Car Mileage: 1234
Doors: 4
Drive Train: 4 x 4
--- at this point I wan the google sheet to update and increase the number of 4X4’s by 1





...

Thanks for providing more details. Does that mean that if you have e.g. 6 fords in Google Spreadsheet, you want it to increase to 6 when someone picks another ford? If yes, I'm afraid this isn't doable in the form condition.

The easiest way you can do is to add 2nd sheet in a separate tab and use spreadsheet formula to count every ford as 1. This formula might help https://support.google.com/docs/answer/3093480?hl=en

Example:

Here's how to create a 2nd tab sheet within the form submissions sheet. You'll see this at the very bottom of the spreadsheet page.

Example formula based on the above reference;

=COUNTIF(Sheet1!B1:B8,"Ford")