The only part of SignatureSatori accessible to end-users is The User Page. It's a place where users can view and modify their personal data stored in the app.
The End User Page is accessible for everybody under the link https://www.signaturesatori.com/app/user. Users need to log in with their work account in order to access their data. It can also be accessed via Apps Launcher.
All changes done on the User page will be saved to the app and the administrator will be notified; admins can enable the changes to be automatically applied as the signature is updated.
Admins can also modify the layout of the page - make certain fields read-only or hidden. They can even set predefined values. You can learn more about that in a dedicated article.