I hope I can add my 2c worth since I had someone explain it to me a while back.
The Theory of Timelines relates to Time being a Torroid rather than a straight line.
Here is a diagram of Times and Timelines according to Quantum Physics- https://en.wikipedia.org/wiki/Toroidal_moment#/media/File:Solenoid_currents_inducing_a_toroidal_magnetic_moment.tif
The reason that Timelines exist is because (according to Bashar/Pilaedian Theory), is that we can move to a Timeline or Parallel Reality of our choosing. They say, we are constantly shifting, millions of times a second.
Since there are parallel realities, we simply move ourselves to the reality of our beliefs. Because, according to Bashar/Palaedians "Reality is just a machine and is there to support our beliefs". Then therefore, what we believe, we see.
I'm not forcing these beliefs as being true. They are just opinions. I'm presenting them simply as one of the explanations that you might consider or investigate as an answer to the original question.