There is a misnomer out there that states crating your dog is cruel and unusual.
But contrary to this idea is a crate is often the safest place a dog can be. If a home has not been doggy-proofed (i.e. a place in the house clear of anything your dog could chew on that would be unhealthy or dangerous) the crate then becomes the safest place for the dog to be while unsupervised.
Some dogs may not want to go into a crate because they have a history of mistrust. In order to help these dogs understand a crate is a safe place they can be encouraged with high value treats. Find out what the dog really likes, such as chicken, top sirloin, liver or carrots. And use these exclusively when introducing them to the crate. Be patient, and soon you will have your dog eagerly wanting to get into the crate.
A crate can be the most valuable tool for your new puppy. When you can not supervise your new puppy then putting them in a crate will guarantee they will not get into anything that might be dangerous to them. And it is the perfect tool for potty training your new puppy.
Most dogs will find a place they deem secure so why not provide that place for them. If trained as a positive experience your dog will learn the crate is a safe place to go and you can use it as a place to leave your dog for short periods of time and even as a motivating tool for getting other behaviors from your dog.
How is this possible? First, it is important not to use their crate as a form of punishment. Never force a dog into a crate but create an environment which makes the dog want to go into the crate, such as providing all their meals in their crate, tossing treats into their crate or giving them a high value treat after they enter their crate. This way it becomes a positive experience and they will look forward to getting into their crate.