Hi ASHWIN,
Unfortunately, this feature is not currently available. But it’s a great idea.
Will you please add your feature request here: https://storepress.fider.io/
and ask others to upvote it.
BTW, you can try other plugins to do this job.
Thank You
Adding quantity Button
ASHWIN PRABHU
Can I add the quantity button to the variation on shop page?
Can I add quantity here(please check image – on shop page) button using the variation swatches plugin?