How to link one lower third to startTimes of multiple time markers ?

It is possible to attach a lower third to all startTimes of of all time markers on a layer ? After importing a bunch of subtitles I have many startime and endtime markers. I want to every startTime trigger (activate) a lower third and edtime marker to deactivate the same lower third. I have a very long videos with subs. Do not want to adjust a lower third manually to every startTime. How to do that with standard functionality of AE if it is possible. If not which, script can do that.
Thank you for any help