Attention! This is a new feature available only in Premiere Pro 2018. If you don't have Premiere Pro 2018 and you can't upgrade to it here is someone else's tutorial on how to close all gaps at once in earlier versions: • Delete Multiple Gaps All At One - Adobe Pr...
In this quick and easy tutorial you'll learn how to close multiple gaps all at once, instead of dragging around or using ripple delete multiple times. Very useful feature.