That literally means you need to add the arguments to the URL to your viz. I thought we had a tooltip which explained that, but we don't. So I added it, should be in github.
To make use of this, you have to use a custom link which adds &latitude=x.xxxxx&longitude=-y.yyyyyyy&zoom=12 (or whatever) to the normal URL for the page with your viz on it.
This typically means you can't use a Fabrik viz link, you'd need to have a hand crafted link elsewhere, like maybe a generic J! link menu type. If you need to work out the main link, just temporarily add a Fabrik Viz link to your menu, go to it, and copy the URL.
-- hugh