Hey Sean,
The Merlin has a much steeper learning curve than the Partner due to the fact that the Merlin was designed to cover more complex situations than the Partner.
I spent quite a bit of time playing around with a Merlin Magix system to get a feel for how it works. I also found myself posting a lot of specific questions asking for assistance in figuring it out.
I would honestly suggest contacting an Authorized Avaya Business Partner in your area to install the system and train you on how to administer it. It will save you lots of

and

.
Paul