When you create a job schedule, you can do so with the services listed on this page. Though you can add services from the Jobs page for a standard integration, it’s not recommended in order to keep the jobs in sync with the integration definition.

The managed services on the Jobs page are registered to the workspace from the integration definition

Unmanaged services were either manually added to the workspace or created through flows that use real-time action processing, like Post to a Network App.