So I have two checkbox fields. The first is a list of filters, and the second are users. My goal is to have the list of users filtered by authorship of page and/or post. So if the ‘post’ checkbox is checked in the first field, then the users listed who are the post_author of at least one post; if the ‘page’ checkbox is checked, then users who have authors pages. But it’s also possible to have both checked.

I believe the update condition supports multiple values, however I’d need the update to be the result of a function that filters the second field based off the values of the first.

Is this possible?