I am considering making a plugin for Horizon which will add additional information to existing dashboards. For example, the plugin may add a new column to a table in a table in the instances dashboard. I have not found a standard method for plugins to do this. The plugin support I have found only allows for adding new dashboards and panels [1] as far as I can tell. There is currently a way to change any part of openstack_dashboard with a customization module [2]. However, this does not appear to be designed for plugins. Since only one customization module can be specified, it is not a good fit for plugin developers, because users would be limited to one plugin that uses this mechanism. I am wondering if there is a way to have plugins modify existing dashboards currently that I am overlooking. If not, should there be? [1] http://docs.openstack.org/developer/horizon/topics/settings.html#pluggable-settings-label [2] http://docs.openstack.org/developer/horizon/topics/customizing.html#modifying-existing-dashboards-and-panels