Unfortunately, there is nothing in SC that you can configure to make the jobs fire sequentially, when the previous job has completed. Windows Task scheduler controls the execution of the scheduled job. The following article my help to create the Task Scheduler job with the correct triggers:
https://blogs.msdn.microsoft.com/davethompson/2011/10/25/running-a-scheduled-task-after-another/
Please note, the link above is provided for information purposes only. Issues with configuring the Windows Scheduled Task to run sequentially are beyond the scope of support for Secure Copy.