Add an accessibility slide description in 2019 release

Hello - I use Captivate 2019 Release. On the Adobe.com accessibility best practices page, it gives instructions to add a decription to a movie slide ("...select the appropriate slide. Choose Slide > Properties. Click the Accessibility button.") However, these directions don't seem to be applicable to my version of Captivate. I don't see an options for Slide > Properties. I do see an option for Accessibility from the hamburger icon in the slide Properties pane, is that the correct way to add the description?