In the WP editor (backend)I want to show or hide a set of checkboxes --conditionally-- depending on a selection made in an earlier set of checkboxes.
Initially I was unable to get conditionals working and kept getting a this error "You will be able to set conditional field display when you save more fields" despite having saved many fields. Then I added a single checkbox and was able to set conditional display of other fields based on that checkbox. After removing those conditionals and the single checkbox field it continues to show as an option for setting conditionals - even though it isn't a field option any more. This is another issue.
What I need: On the backend, a WP editor can select an age group from the custom checkboxes group called "age group" for the activities post type. Based on that selection, a group of "keyword" checkboxes becomes available to them.