To have that option selectable per node, you could edit the following file:
Engine\Plugins\VirtualProduction\Switchboard\Source\Switchboard\switchboard\devices\ndisplay\plugin_ndisplay.py
Add:
DevicenDisplay.csettings[‘render_mode’],
To the function:
setting_overrides
As shown here:
def setting_overrides(self): return [ DevicenDisplay.csettings['render_mode'], # <- HERE DevicenDisplay.csettings['ndisplay_cmd_args'], (...)
It will customize the command line of each node.