The Opening and Closing sequences are optional. The duration on the timeline can be adjusted by trimming the right end to the duration desired. If the duration is too short, then add start another and another one at the end until you get the time duration needed as each is a little over 1 minute long.
I would like to place this comment and review in the thread but will not do so or answer any questions in that thread as it will cause a nested loop. The last user there need to fix his post with Reply to this topic instead of using Reply.