You want to pause your ticker element / disable the auto-loop/autoplay functionality on it, so it will not loop or tick to the next item until the user explicitly clicks on the next / previous button? then this article is for you.
Step 1: Add Class to the Tickers element
I will use here my-paused-ticker as a class name
Step 2: Add Script Editor Web Part
You can refer to the following article if you don't know how to add a Script Editor Web Part:
Open the following link, copy all of its content, and paste it into the Embed dialog of the Script Editor Web Part
Save the page, and you're done!