I am currently working with the Dawn theme and was curious if there was a way to change the quantity selector to start at 0.5 and increase/decrease in increments of 0.5 rather than increments of 1. I was just curious if this is something fairly easy to do or if it is something I would need to have custom developed.
I understood your concern. The quantity is not possible in float like 0.5 or 1.5 etc. It is always in an integer number. If your product is related to grams, lbs, or oz units based on that you have to create options on the backend side.
Please check attached the screenshot:
