Prior to the beginning of our church service we have a welcome screen with multiple different slides of information scrolling through it. After that we have a 5 minute countdown with the same slides of information scrolling through it. After the countdown we have a video that begins our service. Is there anyway I can have the first welcome slide going for 20 to 30 minutes and then, at a specific time, let's say 10:55, have it switch automatically to the countdown slide and then, once countdown slide is over, can I get it to switch automatically to the video, then switch to our logo screen automatically? Pretty much having the entire pre-service slides that we have, prior to our praise and worship slides that we do manually, on an automatic time schedule.