Use the keys to move each Henrique up and down to intercept the incoming components. Keys Q and A control left Henrique. Keys P and L control right Henrique.
If you drop a component, that Next is ruined and the Bagomatic2000 will be angry. If you drop 3 then you've gotten too far behind and it's Game Over. After you finish packaging several Nexts, you'll get a momentary tea break to catch your breath.