What is the "maneuvering"?

For the military: maneuver = the planned movement of troops.
E.g. black has a weakness and white brings pieces towards the weakness to ultimately win a pawn.

Moving a piece or multiple pieces to different squares to achieve some goal.
As a simple example (below), the white knight goes to the "outpost" on d5.
d5 is a good square for the knight because it's not possible for black to chase it away with a pawn.

How you gonna stop it


If that cleared a diagonal for the bishop maybe it'd be good, but d5 just gives white a protected passer. Probably a better way to sac it would be e.g. Nd2 Be7 Nc4 Bg5 Nxd6 although since white's e pawn isn't weak (Ke2) I'm not sure what black's doing.