funding is the key. do you have a sponsor?

small-ish tournament (just between colleague, friends, schoolmate etc) normally need no sponsor. collect entrance fee among participants to pay a rent, prize, beverages etc.

big-ish tournament normally need a sponsor. u need to organize a committee to setup promotion, finding sponsor, etc.

if u have a good connection to futsal center owner, thats a big help. they usually know exactly what to do..