Tempo changes using Addictive Drums 2

I have the latest Sonar Platinum update and I am using Addictive Drums 2 for my "drummer." Keep in mind, Sonar is my first software recording program and while I am not a complete dummy with using computers and software, I am also in no way an expert. Been using Sonar since last February. When I have a PC problems of any kind, I search the web for solutions. In other words, I am in my 40s but I embrace technology. So, my question is this - Using Addictive Drums 2, is there an easily explainable way of slowing down the tempo of a project (I assume the tempo view, right)? I am looking to create an ending to song, like when the drums slow down a little, hence the band slows down. To give the song a real-er kind of sound to the tempo. Like the last three chords are something like a V, VI, I progression and then a giant, long fill on the drums and then it ends on I. Does the question make sense? How do I go about that? And an added question - how do I program a cymbal choke on Addictive Drums 2?

You found the tempo map. Just draw it in.

You've got good responses for changing the tempos.
From my experience, when you're just looking for an ending like that, i'll usually program it by hand.  As the song plays out, tap out the major kick or snare beats as you want them hit and then go into PRV and build the rest of the drum track around it while ignoring the time graph.  This will give it some "humanity" while normally not taking too long.

reginaldStjohn
As far as the Cymbal choke in AD2 I think there is a key or articulation that is the choke or mute to a cymbal.  You have to open the mapping view in AD2 and you can see what key each articulation is mapped to. You can also change what key/notes each articulation is mapped to if you so desire.

Oh yes, I found the cymbal choke woman in the mapping view on AD2. But, just clicking on the choke key makes no sound. Using the step sequencer, would I program the cymbal hit let's say on beat one, then program the cymbal choke on the 'and' of beat one?

One more tip: When drawing tempo changes, enable snap at a resolution matching the smallest interval between notes in the region. There's no point in having a slew of tempo changes between notes, and SONAR and tempo-synced plugins will behave better if tempo changes are discrete.
 
'cymbal choke woman'...? Spellchecker being helpful? 

Sweet Cymbal Woman?

https://www.youtube.com/watch?v=0IRjl3SWC2U 

Ok, I think I get it with the tempo changes. I am looking to mimic the "rock song ending" with AD2 - something similar to, let's say the ending to Scissorfight's song Hammerdown. Kind of stoner groove metal ending.
Is that possible to do with AD2 and the step sequencer in Sonar?

https://m.youtube.com/watch?v=29kXPzFUdwY