Unfortunately in terms of the app, the video is all there is. The video was created by CoralVue because Giesemann did not have any instructions on how to use the app.
I am not sure what you mean by endless running feature. Can you please give me more details?
Push feature is to force the master fixture to send the information to the slave fixtures.
Left and right buttons let you shift your schedule earlier or later without having to move every single point of your schedule. You can move each individual channel as well.
Yes, you can always save changes to the preset but you must call the information from the fixture into your mobile device first. Edit it and then upload it to the fixtures afterwards. This was covered in the video.