How to activate the JR pass for two traveller arriving in Tokyo separately

My wife and I are traveling to Tokyo (Narita) from different countries; I will arrive on 20 April in the evening and she will arrive on 21 April in the morning.

Can I activate her JR pass on her behalf without her being there physically with me? Or would it be better that I order two individual JR passes and have one delivered to her separately.

Thank you.