Which of the following is NOT a function of the Canvas app in Salesforce?

The correct choice is related to the functions and capabilities of the Canvas app within Salesforce. The Canvas app is primarily designed to enhance the user experience by allowing seamless integration with external systems, providing access to data directly from those external applications, and enabling the display of content from external sources within the Salesforce interface.

Creating user permissions, however, is not a function of the Canvas app. User permissions are managed within the Salesforce platform itself, typically through the setup menu, profiles, and permission sets. This setup is essential for defining what users can do and see within the Salesforce ecosystem, but it does not fall under the functionality offered by the Canvas framework, which focuses on integration and data presentation rather than user access control.

Thus, the choice regarding creating user permissions stands out as it relates specifically to internal Salesforce administration rather than the external data interaction and integration purposes that describe the capabilities of the Canvas app.