I've been searching for a way to pass placeholder url arguments (e.g. %argument, !argument, etc.) to views in unmodified Panopoly. I can't seem to when adding content using Panopoly's Content function (admin/content). On the other hand, I am able to pass arguments using configuration options found under the Page Manager interface (admin/structure/pages). Panopoly doesn't enable the standard Page Manager interface by default.
My view has a content pane display with a contextual filter in glossary mode. The filter source is "From panel argument" with a value of "First." I've added the content pane to two pages, one using Panopoly's Content function, and the other using Page Manager. While Page Manager allows one to configure arguments, I don't see that Panopoly Content allows this kind of configuration.
Am I missing something or is Page Manager the solution for passing url arguments?
