Here's a symbol that should do the trick. Select Symbol, Import Symbol to use:
Timer.zip (17.3 KB)
It has a timeline that runs for 10 seconds, then resumes the Main Timeline. Here's how to run it:
The symbol's timeline runs
hypeDocument.continueTimelineNamed('Main Timeline', hypeDocument.kDirectionForward, true); after 10 seconds to 'unpause'.
You can copy and paste the timeline action to use this in any scene where the symbol (which can be off the scene) is present.