Hi Mark,
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.
Thank You
Public
Ticket #92526
Bullets instead of Thumbnails
Mark Gorka
Is there a way to display bullets in place of the thumbnails for the product image gallery – like a slideshow has?