Hi Phil

On the page: http://www.mediawiki.org/wiki/Extension:UploadWizard#URL_arguments
it lists these parameters:

* campaign: Specifies which [[/Campaigns|upload campaign]] to use.
* skiptutorial: Sets if the licensing tutorial should be skipped or not. The value should be "1" or "true" to skip.
* id: Sets the initial value for the id field.
* description: Sets the initial value for the description field.
* lat: Sets the initial value for the latitude field.
* lon: Sets the initial value for the longitude field.
* alt: Sets the initial value for the altitude field.
* categories: Sets the initial value for the categories field, multiple categories seperated by |.

But is all of this required, and where are the templates? Could someone send a sample URL with the necessary parameters present?

I am not sure this is what you are looking for, but in case : you have a couple of examples at <https://commons.wikimedia.org/wiki/Commons:Upload_Wizard/Fields_prefilling>

Hope that helps,

--
Jean-Frédéric