Presentation slide length

I am new to presenter and am trying to figure out the best way to make an auto-advancing 3 or 4 slide presentation with each slide lasting 10-15 minutes. This would be a background for the sermon. All I have found is a slide length up to 30 seconds.

I honestly don't know why this isn't possible anymore. About two Years ago i used this for announcement Slides with just regular slides because Announcements couldnt do it back then. There was a possibility to set the time manually. I dont know about 10 minutes but at least 5 i think.

a very hacky and janky way to fix that issue might be to create videos from those slides and play them after one another