Hello:
I don't really understand how you can perform hiring with PA30 so I am assuming you are using an hiring action with PA40 tcode.
In order to limit processing IT0001, IT0002 (IT0000 will always be processed) you probably want to create a specific action with a specific infogroup.
For this you probably need to change your action infogroup according.
T529A associate actions to infogroup.
V_T588D list your infotype to be processed.
Another option would be to hit the change infogroup button in IT0000 screen, select and delete your unwanted entries before further processing (but that would be on a per hiring actions step).
Best,
Antoine