The way you increment your bets will be determined by how much your advantage changes at each TC, how big your bankroll is, how much risk you are willing to take, and what kind of limitations are imposed (table limits, spread size, etc.). We can’t answer your question without more info.
Most books cover the betting strategies for the systems they teach, so that would be a good place to start learning. You can also find general advice about optimal betting and risk in Schlesinger’s Blackjack Attack. You could also search this site for older threads on bet spreads to see how other people are betting.
-Sonny-