John Deere Operations Center™ integration

How can I link my Atfarm account to John Deere Operations Center™ and import farms and fields?
How can I assign crop class and type to fields imported from John Deere Operations Center™?
How can I set an update interval to export biomass changes to John Deere Operations Center™?
How can I import more farms and fields from John Deere Operations Center™?
How do I synchronise updated farm and field data from John Deere Operations Center™?
How can I disconnect my Atfarm account from John Deere Operations Center™?