Extendscript move "marker" in title template...

[Dmitriy5FD0]

I need somehow to adjust title animation length by moving this marker using Extendscript

P.S. i can't even move in AE using mouse %)

Template is here: https://mediatours.ca/test1/Caption07.aep

[Rick Gerard]

To lock or unlock all composition markers on a composition, right-click (Windows) or Control-click (Mac OS) a marker on the composition marker.

That's a funky template. The first red flag is that the control layer, with all the sliders and color controls, is on an adjustment layer instead of a Null. The second one is that sliders are used for everything when Menu, checkbox, and point controllers could simplify the UI and make setting things up a lot easier. 

[Dmitriy5FD0]

What about Extendscript?

[Rick Gerard]

Scripts cannot lock or unlock markers. You generally can only create or modify properties that have keyframes or will receive values.