There are Realtors that will help with your search, (myself included). it depends on what you are looking for. if it is an actual aprtment complex style living then you would have to deal directly with the apartment complex.
If you are looking to rent a condo or a town home then a Realtor can probably help you and secure a place for you.
Do you have an idea of where you are looking to live in the Charlotte area?
Please feel free to contact me and I will help you out the best I can....