How specifically those rules can be configured?
Can you provide step by step instructions?
What I am presently doing is using for example DownThemAll add-on for Firefox. It is configured to start only 1 segment. Speed reaches 1xDSL. Then after a few seconds I add another segment and d/l rate reaches 2xDSL line. Most of the time that works, but it’s a manual workaround every time.