Intelligent Octopus - Automating the Octopus Target Ready By based on some sort of a schedule

Having added the Octopus Intelligent Tariff integration I am looking at how I can automate the select.octopus_target_ready_by_time entity which is effectively a dropdown list of times.
Whats the best strategy to do this I did wonder whether the schedule helper could be used but I was looking for something where I can have a dashboard with a list of days Mon-Sun and have dropdowns for each day of the week