Look, everything work here

https://goassbeitl.mn-web.at/test2

https://goassbeitl.mn-web.at/musiker

This theme is not allow you to go on parent page. It's long to write, try to use as source page page from another menu  as I explaine here

Or you can customize theme behavior something like this

or try plugin from this topic http://www.typesettercms.com/Forum?show=t2244   i'm not shure if it work with your theme.

Hi.

It's been a while... as far as i remember how it works -    This plugin can build  layout from direct child pages of page on which section(catalog easy) is placed, or from pages that is childs of page that you select as source page, or you can take and show child pages from page that is placed in some other menu.

Added a category in the admin settings

Created 6 pages with text and image content and added attribute data-filter "people"

Categories needed just for sortable portfolio layout. Once created in admin settings of plugin, possible to assign page to any category in page manager(menu). 

Created a new page with content type Catalog Easy with class "short_info" and portfolio category "people"

No need to create short_info class  plugin can take info from text, just play with Catalog section options.   Images also plugin can take from child page, or posssible to assign in page manager(menu) some other image. 

To quickly see something: put catalog section on pages, move  this 6 pages as child pages of that page, select  direct child pages as source and one of layouts.

HI

You have a lot of ways to this.

I belive this will help you

that in addon.ini for each plugin for categories it's wil be:

Simple_Blog_Categories

hi try to

<? gpOutput::Get('TopTwoMenu','m1'); ?>

where m1 or m2 or m3... is menu id's

Hi, try

<? gpOutput::Get('Gadget','Gadget_Name');?>

where Gadget_Name  is what you want to show

Hi. 

Please enable php short tags for your server, and it should work.

Then try and may be it will be usable even as it is. :)