New to this but I have just started using OHME Home Pro with our Ioniq 5 and Intelligent Octopus. In this configuration IO app tells you to use Ohme app for control. In the Ohme app you can set a price cap for charging to be the 10p night right. The app then automatically changes the start time to be 11:30pm. The car will then only charge during the 10p period. I have the configuration set to charge the cat to 100% but it stops charging at 5:30am or 100% whichever happens first. Works perfectly for me.