In EASA land there may be a difference between the commander and the PIC. For example in my company a trainer occupying the jump seat is the commander of the flight and has the ultimate responsibility, however the CPT on the left seat is still PIC. Except during line training of a new CPT of course, in that case it is "only" PICUS time. Unlike the UK most of the rest of Europe requires a special program approved by the authority to be able to get PICUS time which limit it to command training.