Managing tado° schedule in Homey Pro?

Hello Suutje,

Correct.

No, it’s not possible to edit the programmed schedule with Homey.
However, it’s possible to override it, and sort of let Homey take control, but keeping the original schedule intact.
Take a look at the tadoZones app flow cards (find it in the homey.app store):

I can recommend the tadoZones app by 100%