Thanks for your reply. I found a way, by chaging atrribute and trustee I was able partialy modify 4000 projects project settigs. I modified HP Prject security view settigs from all user to restricted users and was able to restrict tasks but not projects. I am still tryig find proect view attribute or any other column value to restrict the same
I can share the table names if you wish. Let me know if you find somethig.