Option to default to either "Download" or "Read Now" when clicking a book, instead of the popup

I use Ubooquity for my massive RPG PDF collections simply because its the best option for the very weird file structure I have organized over the years. I'd simply love to be able to set a default action when clicking a book, so that instead of the popup asking if I want to download or read pops up, it just automatically does whichever option I set as default. I often like to copy/paste or highlight things in these PDFs so a way to skip those extra clicks would be a massive QOL improvement.