How to start IDLE with -n option????

Hello list -

I want to run mpl interactively from IDLE on Windows XP.
For that I need to use the ‘-n’ option when starting IDLE.

However, in the recent version of Python, when I select the IDLE icon and right click to set the properties, the ‘target’ is now grey and cannot be edited.

In the past I could edit the target and add the ‘-n’ option.
Not anymore.

Any ideas how to change this?