Who can create Automation Journeys? Follow

Users with “Manage Automation” rights can create, delete and update automation.

To Assign Roles and Permissions for Automation. Please perform the following steps. 

• Click on Profile Icon
• Go to Setup
• Users & Security
• Profile Permissions

• Edit the relevant Profile
• Under Admin Operations Label Enable - "Manage Automations"

By default, Administrator users will have "Manage Automation" permission enabled.