Add a HART Device Template from a device definition This procedure requires a device template category. Device templates cannot be added to the top level of Device Templates. Note: You can also create a device template by selecting and right-clicking a device template category, and then clicking New → Device Template. Navigate to the device definition (Library/Device Definitions/HART Devices/manufacturer/device/revision). Select the device revision on which you want to base the template. Drag the device revision to a template category (Library/Device Templates/category).