Catalogue Structure
Catalogues can be structured in different ways to influence the visibility of the content.
The management of the structure of the catalogs can be found here:

There are two different types of catalogs:
Main Catalogue
Catalogue

A main catalogue is used for structuring and ideally contains no content or content that should be visible to everyone.
The catalogues can then be structured either by topic or by department. The respective visibility can be restricted via the approvals.

The options can be accessed in the main catalog:

Here you can specify which objects can be displayed or added to the catalogue and how the catalogue should be displayed.
These settings are only possible for main catalogs.