Write a needs list, what you need in a POS system (Table service vs quick service, accounts & loyalty systems? Inventory management / stock control? How many outlets / storage bins needed for inventory? How many cost centres & pricing levels needed? Labour management w. time & attendance? Availability & cost to service & maintain the system, availability of trained staff in maintaining the system... Ease of use by waiters, clarity of instruction / sorting & consolidation needs of the chef, what reporting information do you need (KPI's) and can these systems measure YOUR KPI's? WHat is the availability of replacement / spare parts as they break? What are your operational needs (Kitchen displays? Video recording of log journals?
What is the industry standard in your area and why?