Schema v1.10
App Customization
App customization enables admins to change the look-and-feel of the apps loaded through bots, messaging extensions, tabs, and connectors. For example, if the Teams admin customizes the name of an app from Contoso to Contoso Agent, then the app will appear with the new name Contoso Agent to users. However, while adding a connector to a chat, in the list the connectors will still show the name of the app as Contoso
Please refer to the documentation regarding the schema property:
configurableProperties
https://docs.microsoft.com/en-us/microsoftteams/platform/resources/schema/manifest-schema#configurableproperties