Dan Winterland
That's the Classic. The 400 is a bit different. There are 3 groups - Inner, mid and outer. With Flap 1, the inner (Krugers) extend. With flap 5, the other sections extend.
Sorry Dan but not on the 747-400 they don't.
The LE flaps are extended in two groups. Group A LE flaps, consisting of flaps No. 6 through 13 in the left wing and No. 14 through 21 in the right wing, will extend together when the flap control lever is moved to the 1 unit detent. The remaining LE flaps, group B, will extend when the flap control lever is moved to the 5 unit detent.
The LE flaps are sequenced to retract in two groups. Group A LE flaps will retract when the flap control lever is moved to the full UP detent and after the outboard TE flaps is fully retracted. Group B LE flaps will retract when the flap control lever is moved to the 1 unit or full UP detent and the inboard TE flaps are less than 5 units.