Random redirects allow redirecting a percentage of users to target URL. Note that this is not exactly random, you get to specify a percentage for the redirect to happen. So for a very large number of visitors this rule actually says Redirect N% of the users. But you don’t get to specify which users to redirect so for the targeted users this is random.
There is only one property exposed, that is Percentage of Users
Only one operator is available for this rule, the Equals operator. Being a probability, you can’t actually use greater or less operators because the probability only becomes the absolute value for an infinite number of visits.