Just taking a quick look at the official site... it is a relatively older product and was designed specifically for Poser not Daz. Poser has always had a completely different folder structure. A lot of times to use poser data you need to map the location specifically as poser data.
View attachment 3116524
1. Open "Content Directory Manager"
2. Right-click on "Poser Formats"
3. Left-click "add a runtime directory..."
4. Navigate to, and select the directory that has the "runtime" folder you extracted (it can be the same place you store daz content and have mapped as daz data or not, does not matter).
Then to access it:
View attachment 3116529
Go to your "Content Library" (not smart content)
I closed all the folders down... You should have a "Poser Formats". Open/Expand it.
I believe the Neon Cage items are stored as props... so open the "Props" and scroll down to "Z the Neon Club"
Sidenote, being designed for poser and an older product, decent chance you'll need to redo all the lighting and emissives yourself.
Edit:
Sorry, guess I should have looked at the next forum page of the thread before I bothered with this response. I'll leave it just in case it may be of use even being redundant.