It depends a bit on what brand of feed you are using, but the normal progression is Starter for the first 6 weeks, Grower from week 6 until they start to lay or 20 weeks age, whichever comes first. Usually the recommendations are on the bag. In some areas, you cannot get Starter or Grower, but get a combined Starter/Grower which is good from day 1 until you switch to layer. Remember to check the bag. Some Starters or Growers are higher in protein and are meant for game birds, not chickens. Starter should have around 18% to 20% protein, grower 16% protein, and Layer 16% protein.
You don't want to give young growing chicks adult Layer feed. It contains over 4% calcium which can cause bone deformation or liver problems in a growing chick. Regular Starter and Grower only have a little over 1% calcium.