The editing domain page has a section for updating the accessibility icon image and location.
Menu Hidden – Checking this option will hide the accessibility icon
Horizontal Alignment – Set the horizontal alignment of the accessibility icon. The options are:
Default – Aligned with the accessibility menu
Left – Aligned to the left
Center – Aligned to the center
Right – Aligned to the right
Start – Aligned with the body of the document
End
Vertical Alignment – Set the vertical alignment:
Default – Aligned with the accessibility menu
Top – Aligned to the top of the screen
Middle – Aligned to the middle of the screen
Bottom – Aligned to the bottom of the screen
Menu Icon – Change the accessibility menu icon
Menu Icon Width – In case the icon is a sprite set the width of the icon
Menu Icon Height – In case the icon is a sprite set the height of the icon
Menu Icon Offset X – In case the icon is a sprite set the offset x of the icon
Menu Icon Offset Y – In case the icon is a sprite set the offset y of the icon
Menu Icon Extra Styles – Insert additional style to go with the icon