For more details, see this Knowledge Base article: How do I enable and use remote commands in Windows Power Shell?
dialog appears when you manually add a new sensor to a device.
This setting is only available if stacked graphs are selected above. All channels with this unit will be stacked on top of each other.
It only shows the setting fields that are required for creating the sensor.
Therefore, you will not see all setting fields in this dialog.
You can change the available intervals in the system administration on PRTG on premises installations.
Define the number of scanning intervals that a sensor has time to reach and check a device again in case a sensor query fails.
You can change (nearly) all settings in the sensor's Select a priority for the sensor.