Synchronize one part of a subtitle with another one

[MC23]

Hello everyone! So... I've got these 2 subtitles: the first one is a "full english" subtitle whereas the second one covers only the thai parts of the movie. Problem is: the first one is synchronized on english parts but not on thai ones, whereas the second one is perfectly synchronized to the thai parts.

Does somebody know any way I can replace the timings for thai parts from second one to first one without having to edit every single line? Thanks!

NOTE: line numbers are the same in both files (this means that both in the english and in the thai subtitle line 18 is "Hello sir, anything I can do?", but in the english one that's just desynchronized)

[videobruger]

Subtitle Edit -> Synchronization -> Point sync via other subtitle

[MC23]

I can't understand how does it work. Which subtitle do I have to open first? I don't also understand how the 2 windows work together, I'm searching for a helpful video for this by the way... Thanks

[videobruger]

Open the english.

Use Synchronization -> Point sync via other subtitle and select the thai.

Select the first line with thai parts in both windows (line 11 below) and "Set sync point"
Select last line with thai part in both windows (line 20 below) and "Set sync point"

Hit "Apply"
Repeat for other parts.

[MC23]

Thanks I managed to do it :>