I am trying to make a print and the suggested media type for this Rag paper I'm using says "Other Fine Art Paper 1" That option is grayed out and I can't figure out how to activate that option. I am printing from Lightroom to a Canon Pixma Pro 10. Hoping someone can help with a solution.

To select (unlock) the Fine Art media settings on a Canon printer, start in the paper size menu. Select your paper size (US Letter, Tabloid, etc) and from the pop-out menu, choose the option that says 'Art Paper Margin (30)'. Once you have selected an Art Paper Margin paper size, you will be able to select the Fine Art media settings in the Quality & Media menu.