Rollover image/text caption

I opened a responsive project and wanted to create a sort of ‘thing-link’ that will basically allow the viewer to hover over an item in a single slide-image and receive either a link to another page, action to move on to another slide, text description, or audio.  I thought rollover objects would be the best way to do this, but for some reason they are greyed out from my list of options.  Any idea why?  I thought of also using […]