Click the green bill to earn $1. This can be used to get service or lower SHC (Service Help Clicks). Click the yellow bill (during service) to help the square get to the end. SHC is how many clicks needed before the square moves a step when clicking the yellow bill. SHC starts at 5. Use money to lower it by 1 each time. Minimum of 1 SHC. Every time the square finishes, connection goes up by 1. Get connection to 10 to win it all!
Credit to tyboxsmash Note: The Lower SHC upgrade is NOT required to beat the game. It just makes it more convenient.