Thank you for your question,
With On Behalf Of (OBO), it will require some set up & assistance from the administrator of the Symphony pod environment that you are using.
Firstly, the bot will need to authenticate with the correct permission on the bot & pod environment.
Secondly, you will be required to have an extension application for the OBO with the end user that you plan on using the OBO function with - they will needs to have the OBO extension application enabled and installed from the end user point of view.
This step will be dependant whether the Symphony pod administrator will allow access to the end user to the OBO extension application. If this stage is not complete or the request is rejected - the OBO process will not be possible.
For the Symphony Sandbox environment (Develop2) - we do not permit developers the using the OBO function & extension application. You only be able to test the OBO function and extension application in your own Symphony pod environment.
Please take a look at the following documentation to better understand the requirement & steps involved in order to conduct the OBO function.
Please let us know if you have any feedback or questions.