Hiding Specific Category in Manage Engine Tool

Hiding Specific Category in Manage Engine Tool

Hi There,

I am trying to hide specific categories (Not all) from the requester (Default template - Incidents). My purpose is to replace the some out of the existing list of Categories and subsequent subcategories and items with a new set of data (CTI). I guess ,the easiest way is to hide the existing category list from the requester and import new categories to replace them. If I try to create rules and forms then It would take a long time to hide relevant subcategories from the each categories. Can someone please suggest an alternate or easier way to hide specific categories from the category list for Requester.