How to Combine Multiple Clips in Desktop Editor?

I just purchased an X3 and am new to the Insta360 community. I love the features of this camera and have started using the Insta360 Studio desktop editor. I have several 360 video clips that I would like to stitch together to form one video but I can't figure out how to do that with this editor. This seems like a basic function so I'm perplexed why I can't find it. Any ideas on how to accomplish this?