dropdown selection

[spn200286]

I dont know if this is possible, im making a booking system, and i want to link menu items to a package, basacly below is what i have, and i want the receptionest to be able to enter in a list of starters and a list of main etc into one field
which can thus be selected for reports,and linked to functions if tha makes any sense

any advice/critism is welcomed and apreciated