Wanted! 6 way broadband splitter .i need a solution for a way to equaly split my broadband between 6 people .?

I know that one person can take up all the bandwidth so i am looking for a way to equaly dish out bandwidth to 6 people . im a landlord and i want to give my tenants free broadband facilities but in a fair way . im thinking of using my local cable provider as i dont need to pay for a phone line that way .i want to use the unlimited 4 mb package giving each person around 512 -666 gb .firstly can this be done , secondly do i need software or hardware to do it (laptop running in the loft / special router ) , thirdly please remember i dont have the it budget of ibm (it must be economical)! and fourth please explain it to me like im a 6 year old (im not computer literate)! thank you to e body who helps from 1 confused landlord
Answer
get a bt home hub and then e one can connect to it wirelessly. if e one is using it at the same time making it run slow then that is something they can sort out among themselves.