[TYPO3-english] Exclude items from list view in backend

[Daniel Mann]

Hi everyone,

I need to exclude items from the backend's list view which have a 
particular database field set, just like deleted=1.
They are related to other entries and will be changed and deleted with 
their "parents". This parent id is the db field I want to check, so only 
items which actually are parents get shown.
Could someone please give me a slight hint where to look for such a 
hook/setting to be inserted? I was guessing the TCA of the extension but 
I couldn't find any information regarding this topic.

Kind regards,
Daniel