If I am understanding your question correctly, you want to have a subfolder in props to put some of your stuff in. The answer to that is yes with versions 6 and up. (don't know about 4 or 5)

if you are wanting to rename your props folder to humperdink, than no. 

I hope I was able to answer your question, I haven't finished my coffee and am quite confused this morning.

---

Available on Amazon for the Kindle E-Reader Monster of the North and The Shimmering Mage

Today I break my own personal record for the number of days for being alive.
Check out my store here or my free stuff here
I use Poser 13 and win 10