You have like 50 SP's in v11. And with the Yealinks using them is a breeze.
We have just 5 that are accessible to the entire building (about 60 people). We tend to just transfer calls most of the time and the user decides what should happen.
I have noticed, if I recall, that if you have dial tone, you can not pick up a park. So, you need to keep the phone in the cradle and hit the SP button to pick up, or after you pick up cradle, hit CANCEL to drop the line, and then SP to pick up the park.
I would love to see a feature with AutoPark. User calls and gets someones VM. They can say "I am in the building, but not at my desk. To have me paged, hit 1 and you will be put on hold." They goto a SP cue. System pages you with your recorded name "'Tom Jones' you have a call on Park x". If you do not answer within like 60 seconds, it says "User is not available, please leave a message"...