You can create 2 different automated desktop pool and then apply it with your preferred naming pattern. For this case, you can use naming pattern like "abc-1{n:fixed=1}" or you can also specify a list of your desktop names on a text file. These parameters can be defined in Provisioning Settings page in the Add Pool wizard.
Please refers to Horizon View Product Documentation (in the subtopic "Naming Desktops Manually or Providing a Naming Pattern") for more explanations.