How to select the time frame while navigating system trace in android profiling

Question

I'm more interested in time frame where the traversal work is being done by the main thread, or in other words, I want to select any region in the thread section. Not able to select that region. Anyone knows about this?

Answer 1

Actually It worked, I just needed to restart the Android studio and select normally like we do any text selection from the trackPad or mouse.