How to duplicate "More Info" tab function on other tabs

Hi gang,

I’ve searched the forums and can’t find this exact question addressed anywhere. Maybe I’m using the wrong terminology because I can’t imagine I’m the only one wondering how to do something like this.

I’m building a directory for a client who needs dozens of small custom fields that need to be grouped together. I’m able to do this just fine on the More Info tab, but it creates a very long page of fieldsets and fields. How can I move entire fieldsets to their own tabs along with the custom fields grouped with them, or if there is no way to do that, how can I create collapsible fieldsets so that the page won’t be so long by default?

Attached screenshot should help clarify what I mean.

I’m fine with patching in some php…just need some help with what it should be!

Thanks for any help!