That’s an easy way to add an HA entity as Homey device and add all other sensors from the HA device to the Homey device.
A more flexible but even more compley way is adding the entities one by one. This way you can change the label and also add an entity as “main capability”. That measn a energy sensor is added as measure_power than measure_power.entity_id to be able to use this capability in other apps (like Power-by-the-hour). If there are more than one energy measure, only one can be added as main capability, other must be added as subcapability.
I hope the linked posts will guide you. For further questions, just ask
