Center 2: last piece
Step 1 / 3
Rw': 2 Right layers: turn 90°, front face goes down
The top has three pieces, missing the front right spot. The last is at the top left of the front.
Rw' lowers the elevator, F loads the piece, Rw raises it.
Step 1 of 3: Rw'. 2 Right layers: turn 90°, front face goes down