Creating a Second slide
Note that the first slide was created below the Title slide.
Since you can't "go back" to a previous slide (eg the Title slide) and create a new slide that follows (different position) the previous slide, I will attempt to create this slide first, then position later.
Let's hope it works!
How about that... Creating a new slide appears to auto position on the main flow so was auto created to succeed the Title slide.
So, no re-positioning needed.