Clicking on "More Settings" displays a slide-up that is labelled "Advanced Settings".

There is no way to slide the settings into view, but sliding it is how you remove it from view. If it's going to pop up from a link, it should have a close/X option. If it's a slider, it should be visible as a slider from the main interface.

Having the "Generate" button in the Advanced Settings is awkward since it is not a setting.