You'd have to edit this part:

my %config = (
    "ActiveMQ.DLQ"  => [
            "* * * * *", "0" ],
    "sig-io.startSomething" => [ 
            "40-59 20 * * *", 5000,
            "0-15 21 * * *", 5000,
            "* * * * *", 100 ],
    "sig-io.finishSomething" => [ 
            "0-45 21 * * *", 5000,
            "* * * * *", 100 ],
    "default"       => [ "* * * * *", "10" ],
);
[download]

The queue names here are "ActiveMQ.DLQ", "sig-io.startSomething", "sig-io.finishSomething" and "default"

The limits are the even numbered elements of the lists delimited by [ ... ] e.g. 0, 5000, 100 etc.