The Settings tab inside the In-Editor Toolkit contains all of the settings that pertain to the In-Editor Toolkit.
The Window settings adjust how the Toolkit behaves within the Unreal Editor.
Automatically starts up the Toolkit upon Engine open.
Auto Hide - Editor
Automatically hides the Toolkit window when the Unreal Editor is not visible.
Auto Hide - Viewport
Automatically hides the Toolkit window when the viewport is not visible.
The Appearance settings adjust how the Toolkit looks.
Sets the Toolkits background color scheme to be a dark variant.
Sets the Toolkits foreground cards to be the opposite light/dark variant than the background.
Each option contained within a card will be elevated by another sub-card.
The color of the accents found within the Toolkit.