Settings and options in the Co:Writer Chrome Kiosk app can be accessed through the icons on the top of the composing screen. * 

Book icon-  Topic dictionaries and Other Dictionaries.

Image icon-  Used to insert an image into your document.

Cog- Options to adjust Word Prediction, Text and Speak options. 

Box with a right arrow- Export options.

Co:writer cloud- sleep/wakeup Cowriter. 

A- Format settings for the document.

Circle with a plus- New document.

*When in test mode certain options/settings may have restrictions and you will not be allowed to access or change those settings.