Kalimeratheriso It is automated, make sure that you add an 'Agile Charge window' in the Octopus Agile section.
Once you have done that, eg. set a schedule from 00:00 - 23:00, and select the number of half hour charges you would like, Wonder Watt will automatically pick the cheapest each day and charge according to the conditions of your charge window.
You probably only see this in your Agile Integration section:
But it's important to basically 'Save' that Agile charge window. Perhaps we should by default create a 00:00-23:00 Agile charge window for new users with say 6 slots to fill.