You're correct. It's been over 4 years since I've flown the beast. It's the inner and midsections that move with selection of flap 1. BTW, the Ops Manual refers to them as Inner, Mid and outer sections and not by the surface numbers or groups.
And also, with selection of flap 1 on the 744, the TE flaps remain retatracted - it's onlt the LE flaps you get. Wheras on the Classic, the TE flaps move on selection of flap 1/