from your desktop hit: Command + Shift + G

for poser pro 11 (what I have) paste: ~/Library/Application Support/Poser Pro/11/

and hit enter

For Poser pro 2014: ~/Library/Application Support/Poser Pro/10/

I dont have it but my guess for poser pro 2012: ~/Library/Application Support/Poser Pro/9/

And maybe poser 11: ~/Library/Application Support/Poser/11/

Let me know if you find it. If not I will explain how to show hidden files and folders