Put a switch or push button inside the charge door area, that you can simply toggle between "charge now" and "value charge". Having a button there would be easier and simpler than having to set it via the e-drive from the interior. Maybe have it default to "value charge" unless the "charge now" button is held down when the EVSE is plugged in.
2015 I3 Rex SIlver
Giga, tech, parking, harmon Kardon
Sugar Land, TX
about 19,000 miles.
Driven 4,000 miles and have used less than 4 gals.