There are a whole lot of different options. The "standard" is Starter for the first 4 to 8 weeks, Grower from then until you start Layer, then Layer from when they start to lay or they turn 20 weeks. If they start laying later than 20 weeks, you can keep them on Grower until they start to lay. If you want to keep them on Starter until you switch you can, but I like to use Grower so their body growth is more in line with skeleton maturity and internal organ maturity. Many people don't worry about that though.
The major concern is that growing chicks do not need the extra calcium that is in Layer. Too much calcium can cause bone deformations or kidney problems. But once they are grown, the extra calium is not a problem.