The "Enable the Agentforce (Default) Agent" option is enabled in your organization. How can I complete this step? Can anyone help me?

@Sergio Callejo Castro

Hi, you may take a look of: 

https://help.salesforce.com/s/articleView?id=005232832&type=1

Some of the Trailhead projects are already updated to use these instructions:

https://trailhead.salesforce.com/content/learn/projects/quick-start-build-your-first-agent-with-agentforce/configure-an-agentforce-service-agent?trail_id=become-an-agentblazer-champion

If this post resolves the question, would you be so kind to "Accept this Answer"?. This will help other users find the same answer/resolution and help community keep track of answered questions. Thank you. 

Regards, 

Diego Martinez 

Tableau Visionary and Tableau Ambassador