The following code is seen in several Q&A code snippets here (and elsewhere), I am trying to translate the section N'[Uncategorized (Local)]
EXEC @ReturnCode = msdb.dbo.sp_add_category @class=N'JOB', @type=N'LOCAL', @name=N'[Uncategorized (Local)]'
I have looked at Microsoft EXECUTE (Transact-SQL)
Is a valid user or login name. name must be a member of the sysadmin fixed server role or exist as a principal in sys.database_principals or sys.server_principals, respectively. name cannot be a built-in account, such as NT AUTHORITY\LocalService, NT AUTHORITY\NetworkService, or NT AUTHORITY\LocalSystem.
Is a constant string that contains the command to be passed through to the linked server. If the N is included, the string is interpreted as nvarchar data type.
And I am guessing the section N'[Uncategorized (Local)] goes and gets the name of the sysadmin and passes it to execute the job as the sysadmin, but I am not finding a good reference that indicates how all three segments are working together.