I am trying to understand your problem, but I am not sure to do.
Do you want to move the "Event" image, and keep the line between the circle (2 objects) ? Check the attached CAPX.
https://dl.dropboxusercontent.com/u/542 ... index.html
If you want to create Events at specific times, use an FPS counter. Then you can check the actual position of the circle, and create Functions to kick specific multiple events on overlapping points on the timeline.
2nd the "Sine" behavior should make it.