build a structural process model - that is, only the system components and flow direction, not the input data nor resource behavior data. Your model should consists of a minimum of 12 process activities besides the 'Create' and 'Despose' process modules. Go and observe, say, a restaurant, or bank, or insurance, or production, manufacturing...any process that could be possibly modeled. Use the Basic Process option in the Arena Project Bar option - make sure you apply a decision process module.