I think this is a little unclear because I am assuming English is not your first language.
Do you have your document that you can share?
I am assuming that when a person "pauses" your timeline that you want a message to appear (after 10 secs) that tells them to scroll in order to play the timeline again.
If this is what you want then reply with "yes" and someone will share the code that you need.
What is your 1st language. There may also be someone here that can speak it or translate
Tu parle français? Si oui, pouvez-vous expliquer en français