Looking for advice

Hello all,

I’m developing a custom theme for a client. Its essentially a portfolio site.

The URL structure is very important to this client. I’m using /%category%/%postname%/ for Permalinks.

I’d really like to have a Custom Post Type for their Portfolio pieces – not a problem.

Essentially – what I want to have is: url.com/portfolio/sub-section/project-name

I’m having issues with this trying to use Custom Post Types. I end up with url.com/project-name — or url.com/portfolio/project-name. I can’t seem to get the /sub-section into the URL. Even if I allow ‘hierarchy” and “categories” and use /sub-section as the category.

I’d be fine with /portfolio being a “holder page” — and each /sub-section also being “holder pages” — but am not sure how to go about making that happen IE – telling the Custom Post Type to “reside” under certain pages.

Thanks in advance for any ideas,
John