According to the SolarWinds NPM Administrator Guide, you can use Orion groups to organize your network objects based on any criteria, such as location, device type, department, etc. You can then apply account limitations based on Orion groups to restrict user access to only the network objects that belong to a specific group. For example, you can create two Orion groups, one for Sydney and one for Perth, and assign the devices in each location to the corresponding group. Then, you can use the single group Account limitation to limit the users in Sydney to only view the Sydney group, and the users in Perth to only view the Perth group. References: SolarWinds NPM Administrator Guide, page 163-165; Limit users to specific network areas in the SolarWinds Platform