PS Network Authorizations - CAT2

Hi Guys..

Is it possible to restrict authorizations in CAT2 based on the company code of the user?

I need to ensure that users are dropping time (in CAT2 ) only in the network activities where the company code of the network activity is the same as the company code of the person dropping time...

For example.. if the user is defined in company code XXXX and the company code of the network activity that the user uses is YYYY, then system should not allow the time drop... is there a standard SAP functionality for this?

I am relatively new to the PS area..and need your suggestions...

Thanks

Bharath