The screen where you create your project has several sections surrounding the "stage" where you create the project, except for the My Styles area. These sections are not named, but we'll give them some working titles as we go through them.
Here is the entire screen showing all areas:
At the bottom of the screen, you will find the timeline for the current slide. The timeline default is 10 seconds. It can be extended to a maximum of 22 seconds, and it is split into 0.5-second increments, as shown here:
This timeline ...