Service Catalog Configuring Work Flow Tasks

Service Catalog Configuring Work Flow Tasks

Is there a way to configure the tasks in the Workflow so that they fire off sequentially? I am trying to configure items in the Service Catalog so that after the request is put in they go to an approver, after the approval task #1 is is sent to a technician, after task #1 is closed then task #2 is assigned, and so on. 
Can the request be dynamically assigned by the task, after the approval can the request be automatically assigned to a specific technician by the task, and when it is closed by automatically assigned to a technician from task #2?

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