Its(the 152) a single pilot aircraft, only one person can log the time at any one time! Unless you mutually agree to share the flying and you both are licenced and the club/ group/owner allow it.
To log P2 time you must be operating a multi crew aircraft recognised by your authority, in my case a Dash 8. My time goes down as either PIC/us or P2 when either PF(pilot flying) or PNF(pilot not flying ie:radio n flap operator)
