The business controls this two ways at once: a site-wide default (Config, tab "Order: Subscription", "Show Pause/unpause button on profile" and "Show Cancel button on profile") and a rule set on your individual subscription (Not allowed / Request only / Self-service). Whichever of the two is stricter is what you actually see. If either one is "not allowed," the button is hidden completely; if either is "request only," you'll see a Request button instead of an instant one; only when both are set to self-service do you get an immediate Pause/Cancel action.