Schedule instead of rule for invoking lambda with schedule

Serverless Framework
,
1

Documentation about schedule usage is kinda stub.

How to properly use schedule instead of rule? Schedule requires permissions to invoke lambda but how is the permission generated and how it is linked to correct lambda?

functions:
  handler:
    handler: handler.handler
    role: myRole
    events:
      - schedule: cron(0 5 * * ? *)

vs

functions:
  handler:
    handler: handler.handler
    role: myRole
    events:
      - schedule:
          method: scheduler
          rate:
            - cron(0 5 * * ? *)
          timezone: Europe/Helsinki