Simply open your Project and then select to add videos to your Project.
Then click on the LINK tab. You will see an icon on the right side to upload via CSV.
Please note this does NOT upload your videos to Spotlightr. When you are using the Link tab you are using our Hybrid Hosting feature in which we are playing the videos from it's location and using our video player. Nothing is being copied or uploaded to Spotlightr servers.