Choose HST1 there hardly being any work, but otherwise those are the rules since as long as the beta program has existed, short for if you only want the rare beta, you're not of much interest. Then, if it were possible, note there's an incremental backoff, no work, no point to connect, it then becoming chance of the client trying if there happens to be a beta, then going back to sleep for the next N days. Run a short tasks WCG project and your client tries often and invisibly always calling on the beta channel first.