Welcome to the game and the forums. If you need to get a question answered I would suggest you post it in the Help & Questions section. I would also suggest that a simple question like this could be answered ingame if you ask in chat.

Having said that, yes it is possible and players do it all the time. You need a rally point and a feasting hall in the city that you want to send the hero to. Then you need to send them as reinforcement. You need to send at least one other troop with them. The fastest is a scout.