Need to show all the items in the third gallery based off of the 2nd items gallery, I want to SHOW both, but technically the 2nd gallery isn't one that needs to be clicked on, I just want to use it to show the beneath items.
How can I achieve this? See screenshot
You can filter a gallery by a value on a select item in another gallery.
You select an item for Gallery1
Gallery2 would then use the Title of the selected item in gallery1 to filter gallery2 items that had the same title.
Gallery2>Items: Filter('data source', gallery1.selected.title = title)
The title field was just an example. You can other fields on the record.