We recently published some info on distributed licensing this week and we are using the Autodesk Knowledge Network (AKN) to keep them up-to-date.
For this scenario, customers were wondering why a product is going to use a particular license server in a licensing pool. It appears to be random but it is actually just following the cascading 'rule' [order].
How does cascading work with a Distributed License environment?
[via Tech Guru David Dembkoski]
This one is an advanced tip for setting up an options rule, it is rarely used and there is a reference to it here (Pre-AKN).
Can I reserve a certain amount of AutoCAD licenses to a specific group of users?http://knowledge.autodesk.com/search-result/caas/sfdcarticles/sfdcarticles/Can-I-reserve-a-certain-amount-of-AutoCAD-licenses-to-a-specific-group-of-users.html
Here are some helpful reference articles:
Choosing a Network License Server Model for your Autodesk Product
Installing distributed server model