Thank you for your interest. You'll find all the information on this page to get started with the add-in.
You can only update cell data in modules, not properties/lists/formulae. If you are interested in this functionality, please raise it on the idea exchange with an example scenario of how you would use it.
Magali Pelissier, Product Manager - Extensions (Excel Add-in, PowerPoint Add-in, Google Sheets Add-on) Check out our dedicated Community page in the Platform section!