Spreadsheet upload with obscured location

Submitted by DavidHowdon on

I've got to upload some data soon and the site manager has asked that the location be obscured.  If I enter an individual record this is easy enough to do as there is a setting to obscure the records to 1km, 10km resolution etc.  However I've got a lot of data held in MapMate so easier to do it as a spreadsheet upload than transcribe every record across.  What field do I need to have in the upload spreadsheet and what value does it need to have to obscure records to 10km resolution?

Thanks.