To install the Task Scheduler service, you must run the setup program on the computer where you want to install the service. Installing the service also installs the Task Scheduler Configuration Utility. You can either choose to run the utility immediately after you complete the service setup program, or you can choose to run it later. You must use the utility to add QDBs and the Control Center repository (CCDB) to the service. The repositories will not function correctly until you add them to the service.
During installation, the setup program prompts you for an account under which the service will run. You can select to use the local system account or provide a Windows user account. If you select to use the local system account, the repositories that the service will manage must use SQL Server authentication.
Regardless of the option you select for the service account, the account must have access to the SQL Server instances that host the databases the service will manage. If the account does not already have the Log on as a service privilege, the setup program grants it.