I've been working a lot with Product on this and I'm happy to report that this now works, even when having the dependent fields also in the same list view/report! I just tested with a report on my end. Can you confirm works on yours? You should be able to have the external lookup field as a column i...

There is a coming enhancement to custom form fields/builder that should solve for this, it's advanced display logic - should be released FY26.

I do know that adding custom form field options in headers (via layout templates) is in the works, trying to get clarity on timing.

@jon_chen can you merge this idea into this one?

@jon_chen I think you could mark this delivered now with validation released earlier this year? I do wish it was easier to use but it's something... 

This has been an ability for a while now as I'm sure you've seen, @SarahMc3 . @jon_chen can you mark this as Delivered when you're back from break?

I'd still think customers may want this.

@jon_chen here's one less than 2yrs old that you could merge all these votes with that one, I think everyone has just kept putting their votes here since it's been around longer. https://experienceleaguecommunities.adobe.com/t5/workfront-questions/logic-hide-or-show-field-values-depending-on-what-s-...

Hi @jon_chen! This has been an ask for years. I'm sure there are other similar Ideas we could merge. Do you have any insight on this from product?

@Alex_Di no problem, glad it can help you!