Scheduling charge time for E300de?

[Nemgreen]

I have an electricity tariff that has much reduced cost (around 1/3rd) from 00:30-04:30

I haven't worked out how I can plug in charger cable but delay charging until 00:30?
The only option I can find in the car and app is setting an expected departure time, but that doesn't appear to affect when charging starts!

My Renault Zoe can do this really easily

 

[eman]

I have a bp charge master charger and their app allows you to use this function but i don’t have octopus energy yet so don’t use it.

 

[Nemgreen]

I have a dumb home charger so was hoping the Merc would have the smarts!
Seems like a very obvious capability that's missing