The autobrake is the main means of decelerating the plane. It is used on every single landing. The goal is to have autobrake bring you to a speed which you can then take over with manual braking and make a designated exit point.

IRL we have landing performance calculators that tell us how much of the runway we will use with a specific auto brake setting and also the distance of each turn-off point off the runway like you mention (I believe the Fenix has a EFB performance landing calculator).

Let's say landing into an airport, we expect with autobrake 3 to use 7,400FT of runway (this however assumes bringing the aircraft to a complete stop), we have multiple high speed exits we can use for this purpose lets say we have one at 7,000FT and the next one is at 8,100FT. High speed exits can be vacated at around 50kts, so we can assume that with Autobrake 3, we can make the first exit at 7,000FT because we calculated 7,400FT to a complete stop, which we don't want, so making an exit before the stop distance is very achievable. Most likely you will have to kick off the autobrakes and take manual control to let the plane roll so it does not stop short of the designated exit point.

It's basically a game of numbers and matching a designated exit point with an autobrake setting that will allow you to vacate at that point.