@FlashPlayer
Yeah good question. I am also interested in this question. For example, can I use the BAS interface to manage anti-detection browser profiles through the DevTools protocol?
Create a TXT file with all your proxies - each proxy in new line.
Define a resource in BAS and make it "Lines from file" and
"use each line one time" along with "Only read" setting.
That way each thread will start new browser instance and
use new resource line because its set to use each line only
one time. When all proxies are used one time, script will
finish.
Each asynchronous function started, starts in separate thread.
So in that example you will have 2 threads since 2 asynchronous functions
will be started, each with its own (different) script.