Hi @Riana
Looks like you are directly scheduling the job/Flow from the SAS Solution & only validating it via the Schedule Manager plug In in SMC.
Some applications use by default the scheduling server apt to the application. For example DI Studio by default uses the Data step batch server. Any reason why you wish to change the default server to data step batch server?
For #2, You can schedule jobs multiple ways using schedule manager plugin in SMC, If you have Platform process manager installed then you can use that, or else you can use operating system scheduler (Windows Task Manager/ atd, Cron) to acheive this. Most enterprise systems need admin permission to schedule using OS Services. So if you are using that, Kindly check on that.
Hope this helps.