For a custom App uploaded to Microsoft Teams, if an organization wants to disallow users from updating the settings of the custom tab, which attribute name must be set to false in the manifest file

The attribute name which must be set to "false" i the manifest file to prevent users from updating the settings of the custom tab is:

When a custom App which was uploaded to Microsoft Teams and an organization wants to prevent users from changing the settings in the custom tab, then they would have to lock it from the canUpdateConfiguration manifest.

What this does is restrict user access from changing the settings of the custom tab and if this wants to be reversed, then the value of the attribute name would be changed to true, because it is a Boolean function.

Read more about custom tab here:

link

canUpdateConfiguration

Explanation:

The user experience con be refined by enabling users to rename, modify, reconfigure, a channel or group tab by setting as true the property of the canUpdateConfiguration manifest file attribute

In the app, what takes place with regards to the content following the event of a tab removal can be specified by the inclusion of a removal options page and have a value set for the setSettings() configuration removeUrl property.