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Normally, all assigned appstacks are attached during a computer startup or user login. However, some use cases may call for a selective assignment that is only attached to a specific set of computers.
The Limit Attachment option enables you to specify the prefix of a computer name. When provided, the assigned appstack will only be attached to computers whose name that begins with that prefix.
Consider a user named Bob. He is assigned two appstacks, one is a standard assignment and one is one limited to "Win7-Dev". When he logs into the computer named "Win7-Dev-021", both AppStacks are attached. When he logs into "Win7-Test123", only the standard assignment is attached.