Opmanager Multi - Catagorize

Opmanager Multi - Catagorize

Hi there,


I have added a whole subnet of servers/network devices to my opmanager install and it has dumped most if not all of them into the 'Desktops' Catagorey


I have had a hunt around but cannot find a way to mass move them into the servers catagorey other than manually opening each device and changing it from Desktop to Server


Is there an easier way to do this?