Salut Massimo
As Logitech writes in their help section on this topic, this function is not possible with Apple devices. Personally, this has never bothered me so far, as I stand at the Macbook to start a new presentation or to switch between presentations. If you still miss the theatrical start from a distance at the beginning, I recommend starting the presentation before your audience enters and fading it out with the black screen function, or simply inserting an additional start slide. I hope this has helped you.