when they are arriving by canoe (at her/his place)
when you [plural] are arriving by canoe (at her/his place)
when s/he is arriving by canoe (at her/his place)
when I am arriving by canoe (at her/his place)
when we (but not you) are arriving by canoe (at her/his place)
when we (you and I) are arriving by canoe (at her/his place)
when you are arriving by canoe (at her/his place)