This question always bothers me as I'm not sure if I've been doing it right or wrong for the past year.
When I started I was told to log it in the pic box when I was pf but always put the captains name in the "name of pic" box.
I was told picus was only for training flights towards license issue.
I haven't had any of the entries counter signed as was told that my employer would give clarification of total flying hours if I leave so there was no need.
I would only apply for jobs stating that I had "x"hrs multicrew as an FO.
kempus