For example, someone asks someone about something that was done wrong and someone answers that all the questions are not for him, since he does not know this and it was a fault of the answerer.
Or if someone asks you about something for example about construction safety and you want to direct him to another person about this one.
Is this correct? I also have questions about on and for. What is the difference?
On all questions (not) to him. On all safety questions to John.
For all questions (not) to him. For all safety questions to John.