Hi all,. .On the real 747s,. .The Captain advances the throttles, after stabilization, and calls for the FE to set t/off thrust, which he must do by 80 knots, and the Captain removes his hand at V1, so, two hands to 80 knots, then only one until V1.. .Always the Captain, since he will be the one to decide to abort the t/o.. .simple!. .Cheers.