keep it separated at first in a separate room. Let it get used to the noises of your house. After a few days or when you think the cat is ready let the cat out of the room and put your other cats in. The other cats will be able to smell the new cat and the new cat can explore the rest of the house and smell your other cats without direct . After that put the new cat in a cage and let the other cats get near it. They can interact without much trouble aqnd if anything happens you can just lift the cage to get the cat out of there.
keep it separated at first in a separate room. Let it get used to the noises of your house. After a few days or when you think the cat is ready let the cat out of the room and put your other cats in. The other cats will be able to smell the new cat and the new cat can explore the rest of the house and smell your other cats without direct . After that put the new cat in a cage and let the other cats get near it. They can interact without much trouble aqnd if anything happens you can just lift the cage to get the cat out of there.