Control multiple valves together

Configuration
1

Dear community,

Pretty excited about all the functionalities and flexibility that HA offers, this is my first post here.

I did some searches in the docs and in the forum but I found no easy way to create 2 kind of controls:

  1. A binary switch for my heating system: I would like to turn on/off the heating system of a single floor of my house. I have installed a netatmo thermostat with smart valves and they are all integrated.
    I did some searches and I think I have to group together all the valves of a specific floor but there is no option in the predefined groups for the valves

  2. On top of the binary switch i would like to control all the temperatures of the different rooms on a single floor in one go. I managed to install HACS and there I found a slider-type fronted card quite close to what I need:

type: entities
entities:
  - type: custom:slider-entity-row
    entity: climate.bathroom_2nd_floor
    hide_state: false
  - type: custom:slider-entity-row
    entity: climate.guests_room
    hide_state: false
  - type: custom:slider-entity-row
    entity: climate.studio
    hide_state: false
state_color: false
title: Second floor heating

The final step that I miss here is to have the option to link all the temperature and change the floor temperature moving just one of the slider.

I hope I was clear enough, if not please consider I am a newbe here :slight_smile:

Cheers