I'm new to Vegas so this is probably very simple but how do I overlay pictures onto a video? For example, I'm making a commercial of sorts and I want to, say have a logo of whatever come up on a certain part of the screen for a few seconds, then another, then another, etc. in certain parts of the video. I see an option to add a new video track but how do I overlay small pictures onto the video at certain times and can I overlay more than one at a time? Ex. Have one fade in, then another, then another, then they would all leave together?