Min crew on B767-300
At my airline the min crew is 7. Most of the time we operate with 8 crew.
We have 32 C/class and 180 Y/class seats. If we operate with 7 crew the 3L station is not manned.
When we operated the B767-300 as an all Y/class aircraft we had only 247 seats.I am amazed to see some airlines have over 300 seats.