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A few resources to study. Each one has at least one aspect that might be included in your project:

https://www.tidyform.com/catering-invoice-template.html

http://www.chefs-resources.com/kitch...vent-planning/

http://www.bucknell.edu/x4795.xml

https://templates.office.com/en-us/S...query=catering

https://templates.office.com/en-us/Menus

https://www.spreadsheet123.com/calcu...alculator.html

https://www.restaurantowner.com/publ...t-Template.cfm

http://www.smokymtbarbecue.com/bbq-t...p#.WOaE1IjythE