Hi @cgrunert,
This is somewhat possible (but may not cover all of your use case). Essentially, you can limit a certain section so that only section editors/editors can submit to a given section. This is setup in the section settings (See here: Journal Settings) - Please note, that settings may vary according to which version your using (please indicate your specific version number in your posts (e.g. 3.3.0-7), as this assists in answering your questions).
Here’s an example of what the section settings look like in version 3.3:
Best regards,
-Roger
PKP Team