Hi Prashant
You have not mentioned what kind of organization you are working with; I mean pvt / public / govt. Anyway, after approval from management, you first decide the requirement (only simple lunch or breakfast / tea / coffee also). Prepare the scope of services and then you may invite quotes from canteen operators / caterers. You also plan for procuring crockery, utensils, cooking gas, stove, insect catcher etc. as they may have to be provided by company to the caterer.
Assuming that you have proper infrastructure (building with furniture), on finalization of party, you may start the canteen facility. Monthly coupons can be distributed and recovery from salary may be made. You can also form a canteen committee to look after its management. Once it is started there are number of things which could be done for further improvement.
regards,
Priyanka