First off I'm kind of new to SP Admin work. I'm trying to get 2013 w/f in Designer (this is a 2016 Farm w/eval Enterprise license). successfully installed Web Platform Installer, Workflow Manager 1.0 and Cumulative Update 3. when I try to run the "Register" command from PS (as Admin) I don't have an option for "-SPWorkflowService" It seems I have no options for SPWorkflow no matter the command i.e. "Get", "New"
As the reported PowerShell error "The term is not recognized", you are using
Windows Powershell, not
SharePoint management shell.
Windows Powershell, before running the SharePoint cmdlet, you should add
SharePoint Snapin as the following
Also, make sure that you have installed the Workflow Manager Client on each SharePoint Cross the farm.