seller financing the down payment stratergies on multi family

[Carl Fordyce]

i was listing to a podcast on multi family investing the guest that was being interviewed said that they did seller financing for the down payment on their first multi family property.  im considering the purchase of a 6 units and this caught my attention.  is it possible to do seller financing for the down payment in today's market, and if so considering that the average down payment is 25% down what are some ways that i could structure seller financing for the down payment?