Hi @Upendra_Dwivedi 

To enable this feature, you'll need to go to Apps in your workspace and turn on the On-Behalf-Of User Authorization option. After that, when you're creating or editing your app, make sure to select the necessary user API scopes, these define what the app is allowed to do on behalf of the user.

You can refer to the following documentation for step-by-step guidance:

Add on-behalf-of-user authorization to a Databricks app
Authentication and authorization in Databricks Apps