Hi,Japheth
As I know,you can create multiple Call Park Orbit Ranges for one Lync pool,but there is no policy or other ways to control which Call Park Orbit Range will be used out of box when the call is parked into.
However if you would like to customize the Call park according to your orgnization requirements you can look at the Lync SDK to see if it's possible to develop it.Any further question about Lync SDK developping you can post your question to MSDN UC forum.
http://msdn.microsoft.com/en-us/library/hh345235.aspx
B/R
Sharon
Sharon Shen
TechNet Community Support

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