This blueprint implements a simple presence simulation.
It turns the specified light entities on for a random duration between the given minimum and maximum times, then waits a random interval between another minimum and maximum before turning the light on again.
The specified lights are handled separately and independently; each light’s on/off switching is calculated based on the time elapsed since its previous state change (except for the very first time, because in that case all lights could be turned on at once if a long time has passed since a given light’s last state change).
It is possible to add additional conditions to the automation, for example to activate it only after sunset and randomly switch the lights until midnight.
