Need help reading the Incentives and rebates and how to apply them

Hi,

Need help to understand how the Rebates and incentives apply from this website
https://www.autobytel.com/buick/lacrosse/2018/incentives/

thanks

Lets say ur desired trim is Preferred, lease loyalty is $500, competitive is $500 and $1250 is CCR.

There are two figures for the lease loyalty
one is 1000 and the other 500.
and what is CCR? I figured that its Bonus Cash
(GM Financial Supported Lease CCR)+Bonus Cash
(GM Incremental CCR Program)

I am not looking to lease this car but I am looking to find an easy guide to understand this discounts for the purchase or lease at autobytel.

Like I read here at leasehackr on hyundai santa fe the incentives total for leasing the ultimate model is 5250.