The answer to your first question: NO, not out of the box. I would say that collecting a shoot based on Build work item types is not a good idea. Work items cannot be locked by type, and therefore you cannot isolate the creation of these work items only to commands.
You can assign launch permissions to individuals / groups, which will be the recommended way to provide building permits for your team managers.
For your second question, you can take automation as much as you want using the team build API. MS made TFS and Team Build very extensible.
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