Not able to Enable Eistein for Sales in the developer org

Hi,  I created a developer org with Agentforce and Data cloud features from the :https://www.salesforce.com/products/free-trial/developer/    After enabling Einstein I am not able to see any option to Trun it On Einstein For Sales in Setup.    Could you please help me how to enable it so I can complete the prompt Builde Exercise 3: https://developer.salesforce.com/workshops/agentforce-workshop/prompt-builder/3-sales-email