These can be added in two different ways:
If you have the Latitude and Longitude or address:
#1 Log in to BillionGraves.
#2 Hover over Research (main menu).
#3 Click Add Cemetery.
#4 Type in the name of the cemetery and GPS Coordinates or if you have the address check the box "I don't know the GPS Coordinates" and type in the exact address:
#5 Verify Cemetery Location of Map
#6 Check the certify box and click next.
#7 Click Submit
If you know the location by map (Easiest)
#1 Log in to BillionGraves
#2 Click Research
#3 Click Cemetery Search
#4 Find the Cemetery Location using the map
#5 Right Click and create a plus sign for cemetery location
#6 Type in the name of the cemetery in the box that will appear
#7 Click Add Cemetery