A Message from the Team
Know that the Piwigo team makes every effort to simplify at best the work of the webmasters for their gallery. Many options are accessible to ordinary users to customize their gallery. Whether these are simple checkboxes either still to add some lines in a file via the plugin LocalFiles Editor. In brief, Piwigo is really very flexible.
On the other hand, when the customization required has not been planed or can't be done with such Piwigo options, requests to personalize of a gallery is going to involve to have a minimum of notions in informatics language from you. The team takes care of the development and of supports of the software daily. Ours role consists in directing you so that you can realize yourself your own modifications. According to our free time to all (we are passionate volunteers) we give more or less complete, precise, sophisticated solutions but we always ask for a minimum of investment on behalf of the applicant. Otherwise it's the same as having a contractor and performers (the latter working cheap!).
So you will understand while certain demands do not succeed.