The properties area is in the top right of the main window of ScreenFlow. It is here that you edit the properties of your clips and actions. Your document media are also stored here.
There are six pages of properties, navigable via the icons at the top of the properties pages, shown here:
Video Properties:
Scale, rotation, opacity, reflection, drop shadow, saturation,
brightness, contrast.
Audio Properties:
Volume, ducking, mixing, audio effects.
Screen Recording:
Mouse pointer, click effects, keyboard effects.
Callout Properties:
Cursor highlight, window highlight.
Text Properties:
Font, type size, alignment, colour, background.
Document Media:
The media in your document.