LM5051: Replacement for schottky diode

Part Number:LM5051

Hi everyone,

I'm working on some linear battery charger and I want to replace my schottky diodes (D3 and D4) with mosfet. When I check the EV board of LM5051, I'm a little confused for right connection. I attached my schematic below, would you tell me,

1)What is the correct connection for LINE pin of LM5051 ? Should I connect with GND? Because when I check the EVM, it connected with GND.

2)What should be the right direction of mosfet pin ? I added label Con-1 & Con-2 to the mosfet drain and source for explanation.

Thanks!