Regal Ware (RW58230R) 30-Cup Coffee Maker "urns ratio" Questions

I need a user's manual for a Hamilton Beach D50065 Coffee Urn. Where can I get one? what is the ratio of coffee to amount of cups?

whay is the coffee to water ratio per cup? I have a regal 10-30 cup household coffee maker/urn;I have misplaced the instructions and request assdistance. I have the Regal 10 to 30 cup model K7030C. ...