My employer requires all RHS to hold a full, unfrozen ATPL for LH operations as three man crews (1 Capt, 2 FO's) require the FO in the LHS to be PIC during the period of the Commanders rest. If it were different then I could only nominate the Unfrozen ATPL holder to occupy the LHS as an Unfrozen ATPL holder can only be PIC U/S under the supervision of the Commander not the other FO.
Is this different in the Sandpit?
Honest question as I don't know anyone out there anymore!
