from Github: https://github.com/datocms/plugins/issues/7
Right now, a slave field is shown when the master boolean field is set to true , and hidden when it’s false
Would be great to be able to define inverted relationships, for example: show slave field when master boolean is false (and vice versa).
Perhaps you could just supply the field api key, prefixed with a ! , for example: !github, facebook, !twitter