4 class 777 has 11 crew. 1 CSD, 2 Pursers and 8 Main Crew. 3 in First, 4 in CW and 4 in WT and WTP. CSD working in CW and Pursers in First and WT/WTP.
3 class 777 has 10 crew. 1 CSD, 1 Purser and 8 Main Crew. 5 in CW and 5 in WT/WTP. Same here with CSD working in CW and Purser in WT/WTP.