Is there any option to allow the form to automatically Submit changes on exit?
You could then have the option for the end user to reset the form/field to the previous state if they choose. My guess is that the reset button would rarely be used and it would be more convenient for the user to not have to submit the form themselves. Allow the program to submit ...
Now that the forms are organized into cards, why not have a submit button for each card? This way, the submit button will always be located close to the user input.
As the typical use case is that the user will only modify a few elements at a time (hopefully all in the same card?), they won't need to click 3 times.
The button would be visible only once a ...
As I was reading the other comments,
• Position of the Submit Button at the bottom:
The problem with this is that every time user edits the form he might try to find submit
button, and for that he has to scroll at the bottom of the form.
• Floating Submit Button at the bottom left corner:
Floating position of the submit button on the lower left ...
If you are creating the designs on your PC (and using the mockup sizes you intend to replicate), best believe that if it is 'viewable' on your PC, it will be viewable 5-7feet away.
Same goes for the 32' touchscreen, if it looks good on the prototype, it'll definitely look good in reality.