To add a logo to your video, follow the steps below:
Step 1: Go to the ‘My Media’ tab on your left panel.
Step 2: Click on ‘Upload‘, and browse your system files and Select the image/video clips you'd like to use for your video
Step 3: Hover over your uploaded clip and click on the dropdown arrow
Step 4: Click on ‘Create Overlay’
Now you can resize and place it on either corner of the video. Change the duration of the logo on the video from the beginning till the end of the video.