How to set seasonal time program?

[citoki]

I saw a configuration sample in the documentation for the services. In HomeAssitant it self I can only see the mentioned standard myVaillant* services.

How can I add the custom service for setting the time program? Would it be possible to setup multiple time programs for different seasons or weather forecasts?

[signalkraft]

It's currently only available in the latest pre-release version. You could certainly switch between programs with HA automations, based on all kinds of data.

[Depechie]

Hey @signalkraft any tips/tricks on how to do this?
Sorry for the total noob questions.

Let's give an example, assume I want to have a different day schedule when working from home versus working at the office.
So I need to craft the JSON payloads per day of the week for remote and a fixed day schedule JSON payload for working from home.
But what would be the best thing to do... call the time service first with the [] payload to clear the day and then set the new payload?
I guess that has to be done best, prior to the start of the actual day... ( but that is straightforward with data and automations of course ).

Those JSON payloads are just files on disk?