Your event engine seat has been pre-provisioned with an IAM role with basic access rights, for the purpose of the workshop and considering you are running in a sandboxed environment, we will grant wider privileges to the precreated role.
Granting full privileges to a role is not something to do in any scenario outside of sandboxed and ephemeral event engine use cases.
Roles and look for a role that begins with mod- with AWS Service: ec2 for Trusted Entities.Attach policiesAdministratorAccess and click on Attach policy