So I'm in the process of hiring a nanny. I'm doing interviews right now. Then I'm going to pick the top two and do a trial day with each one to see how they interact with my almost 12 week old son.

What did you do during the trial with nannies? I'm planning to be at home. Show them around at first. Should I just stay in another room and let them care for him for a few hours? Step in only if need be? Hover over her the whole time? Something in between?