How can I enable Agent Force Studio?

 The lock icon means Agentforce Studio isn’t enabled in your org.

Go to Setup.

In Quick Find, search for Salesforce Go.

In Salesforce Go’s search box, find Agentforce Studio.

Click Get Started -- Turn On -- Confirm.

Turn on the Agentforce Studio toggle.

Refresh Salesforce and open Agentforce Studio again.trailhead.salesforce

If it is still locked:

Make sure you are using the Agentforce-enabled Developer Edition provided by the Trailhead module.

A regular Developer Edition or Trailhead Playground may not include the required features.trailhead.salesforce

Confirm that Einstein and Agentforce are enabled and that your user has the required permissions.