UserAgent: Mozilla/5.0 (Windows NT 6.1; rv:48.0) Gecko/20100101 Firefox/48.0

Example URL:
http://essayservices.org/

Steps to reproduce the problem:
slides over prezi

What is the expected behavior?

What went wrong?
I am writer from panama and my client asked me to add some slides over prezi. I can't figure out how to do this, or if I even can. I'm trying to make a timeline on prezi and want to include about 15 slides. The stock template has only 8. How can I add slides to include more events? I'm not good with computer stuff and don't find their instructions user friendly. Thanks!

Does it occur on multiple sites: N/A

Is it a problem with a plugin? N/A 

Did this work before? N/A 

Does this work in other browsers? N/A 

Chrome version: <Copy from: 'about:version'>  Channel: n/a
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 22.0 r0