Rival 18 Qt Roaster Oven with Buffet Server "keeping food warm" Questions

...food I'm keeping warm is chicken stir fry for 40 people, and what temp. would you use to keep it warm, it's totally cooked through already. Turn the roaster on high for 30 minutes till the water is ...

...warm, like with a warmer tray? then it will be fine if you add water, and this can also keep the food a little moister from the steam. it is not neccesary to add water but you can. Water will leave a ...

...and then preheat at 350 degrees until hot. Place hot, cooked food in the serving dishes and reduce heat to 250 degree to keep food warm. Adjust the temperature and add more hot water as