Yeah it turns it on or off. With a hot water tank there is no on demand setting. You need to plan ahead to warm the tank which then warms water passing through it
Quoting:
Control of your water temperature is not supported by Hive Active Heating™. You can turn your hot water on or off, set a schedule or Boost it.
You can usually set the temperature of the hot water in your tank directly on your boiler (see your boiler’s instruction manual for details)
I'm about confused as to what boiler you are using ? A combi won't have a tank anyway and is always on demand
Quoting:
Control of your water temperature is not supported by Hive Active Heating™. You can turn your hot water on or off, set a schedule or Boost it.
You can usually set the temperature of the hot water in your tank directly on your boiler (see your boiler’s instruction manual for details)
I'm about confused as to what boiler you are using ? A combi won't have a tank anyway and is always on demand