Thank you all very much for your awesome and speedy responses

So here it goes, Is it possible to all grain brew with a 10 gallon kettle and end with 10 gallons of wort in the fermentor? Or do you need to make exactly the amount of wort in the kettle? Or can you fill with water to attain 10 Gallons in the fermentor? I apologize for the question if it's...