Image Property: Media Picker - select an image from the media library

Caption: Text Field - enter caption text to support image.

Hidden toggle: shows/hides block

Background colour: Adds a background colour to the whole block

Navigation title/Anchor: creates an anchor link that you can use to link to from a navigation object e.g. url#anchorlink

CSSClass: you'll not need to use this

Remove gap: Remove the top padding from the block so it sits tight to the preceding block.